DIFENILAMINNING ((C6H5)2NH) KISLOTALI SHAROITDA ISHQORIY NITRATLAR BILAN TA’SIRI

Abstract

Ushbu maqolada difenilaminning ((C6H5)2NH) kislotali sharoitda ishqoriy nitratlar bilan o‘zaro ta’siri o‘rganilgan. Reaksiya natijasida hosil bo‘ladigan mahsulotlarning spektrofotometrik va xromatografik xususiyatlari tahlil qilingan. Tadqiqot natijalari difenilaminning oksidlanish jarayonlarida ishtirok etishi va hosil bo‘ladigan mahsulotlarning spektral xususiyatlarini tushunish uchun muhim ahamiyatga ega ekanligini ko‘rsatdi. Maqola davomida Organik mahsulotlarning hosil bo`lish mexanizimi va jarayonlari haqida batafsil to`xtalindi.

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Xaliqulov, X. ., Uktamov, O. ., Raxmonberdiyeva, M., & Eshonqulov , Z. . (2025). DIFENILAMINNING ((C6H5)2NH) KISLOTALI SHAROITDA ISHQORIY NITRATLAR BILAN TA’SIRI. Modern Science and Research, 4(3), 548–557. Retrieved from https://inlibrary.uz/index.php/science-research/article/view/73301
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Abstract

Ushbu maqolada difenilaminning ((C6H5)2NH) kislotali sharoitda ishqoriy nitratlar bilan o‘zaro ta’siri o‘rganilgan. Reaksiya natijasida hosil bo‘ladigan mahsulotlarning spektrofotometrik va xromatografik xususiyatlari tahlil qilingan. Tadqiqot natijalari difenilaminning oksidlanish jarayonlarida ishtirok etishi va hosil bo‘ladigan mahsulotlarning spektral xususiyatlarini tushunish uchun muhim ahamiyatga ega ekanligini ko‘rsatdi. Maqola davomida Organik mahsulotlarning hosil bo`lish mexanizimi va jarayonlari haqida batafsil to`xtalindi.


background image

ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

548

DIFENILAMINNING ((C

6

H

5

)

2

NH) KISLOTALI SHAROITDA ISHQORIY NITRATLAR

BILAN TA’SIRI

Xaliqulov Xamro Jasur o’g’li

3

E-mail:

hamroxoliqulov5@gmail.com

Uktamov Ozodbek Shodyor o‘g‘li

1

uktamovozodbek34@gmail.com

Raxmonberdiyeva Muslima Nurbek qizi

1

rahmonberdiyevamuslima3@gmil.com

Eshonqulov Zoir Ahmedovich

2

Ilmiy rahbar.

E-mail:

eshonqulov.7997@gmail.com

Tashkilot: 1 -O`zbekiston – Finlandiya pedagogika institutining akademik litseyi o`quvchisi

2 - O`zbekiston – Finlandiya pedagogika institutining akademik litseyi o`qituvchisi

3 - O`zbekiston – Finlandiya pedagogika instituti xodimi.

https://doi.org/10.5281/zenodo.15063567

Annotatsiya. Ushbu maqolada difenilaminning ((C

6

H

5

)

2

NH) kislotali sharoitda ishqoriy

nitratlar bilan o‘zaro ta’siri o‘rganilgan. Reaksiya natijasida hosil bo‘ladigan mahsulotlarning

spektrofotometrik va xromatografik xususiyatlari tahlil qilingan. Tadqiqot natijalari

difenilaminning oksidlanish jarayonlarida ishtirok etishi va hosil bo‘ladigan mahsulotlarning

spektral xususiyatlarini tushunish uchun muhim ahamiyatga ega ekanligini ko‘rsatdi. Maqola

davomida Organik mahsulotlarning hosil bo`lish mexanizimi va jarayonlari haqida batafsil

to`xtalindi.

Kalit soʻzlar: Difenilamin, oksidlanish, nitrat-ionlar, spektrofotometriya, xromatografiya,

kislotali muhit.

THE INTERACTION OF DIFENILAMINE ((C

6

H

5

)

2

NH) WITH ALKALI NITRATES IN

AN ACIDIC MEDIUM.

Abstract. This article investigates the interaction of difenilamine ((C

6

H

5

)

2

NH) with alkali

nitrates under acidic conditions. The spectrophotometric and chromatographic properties of the

resulting reaction products were analyzed. The research findings demonstrate the significant role

of difenilamine in oxidation processes and provide insights into the spectral characteristics of the

formed products. The article delves into the mechanisms and processes involved in the formation

of organic products.


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ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

549

Keywords: Difenilamine, oxidation, nitrate ions, spectrophotometry, chromatography,

acidic medium.

ВЗАИМОДЕЙСТВИЕ ДИФЕНИЛАМИНА ((C

6

H

5

)

2

NH) С ЩЕЛОЧНЫМИ

НИТРАТАМИ В КИСЛОЙ СРЕДЕ.

Аннотация. В данной статье исследовано взаимодействие дифениламина

((C

6

H

5

)

2

NH) с щелочными нитратами в кислой среде. Проанализированы

спектрофотометрические и хроматографические свойства образующихся продуктов

реакции. Результаты исследования показали важную роль дифениламина в процессах

окисления и позволили понять спектральные характеристики образующихся продуктов. В

статье подробно рассмотрены механизмы и процессы образования органических

продуктов.

Ключевые слова: Дифениламин, окисление, нитрат-ионы, спектрофотометрия,

хроматография, кислая среда.

Kirish

Difenilamin ((C

6

H

5

)

2

NH) – bu aromatik amin

bo‘lib, turli kimyoviy reaksiyalarda ishtirok etadi va

elektrofil ta’sirchanlikka ega. Kislotali sharoitda

ishqoriy nitratlar bilan o‘zaro ta’siri natijasida

nitrolanish reaksiyasi sodir bo‘ladi. Ushbu jarayon nitro

hosilalarni sintez qilishda muhim bosqichlardan biri

hisoblanadi. Tadqiqotimizda difenilaminning nitrat-ionlar ishtirokida kislotali muhitdagi

nitrolanish jarayoni o‘rganildi va hosil bo‘luvchi mahsulotlar tahlil qilindi.

Materiallar va usullar

Reaktivlar: Difenilamin ((C

6

H

5

)

2

NH), konsentrlangan sulfat kislotasi (H

2

SO

4

), Natriy

nitrat (NaNO

3

) yoki kaliy nitrat (KNO

3

), Efir yoki organik erituvchi

Tajriba usuli:

1.

0.1 M li difenilamin 50 ml sulfat kislotada eritiladi.

2.

Aralashmaga 1.5 mol natriy yoki kaliy nitrat asta-sekin qo‘shiladi.

3.

Reaksiya aralashmasi 0–5°C haroratda aralashtiriladi va keyin xona haroratida 1 soat

davomida ushlab turiladi.

4.

Eritma muz bilan suyultirilib, natriy gidroksid eritmasi yordamida neytrallanadi.


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«MODERN

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АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

550

5.

Hosil bo‘lgan nitro hosilalar organik erituvchi bilan ajratib olinadi va suvsizlantiriladi.

6.

Mahsulot xromatografik usulda ajratilib, infraqizil (IQ) spektroskopiya va Yadro-magnit

rezonans (NMR) usullari orqali tahlil qilinadi.

Shu bilan birga Definilamin xona haroratida va qizdirilib, suyultirilgan va konsentrlangan

sulfat kislota ta’sirlashtirildi va natijalar taxlil qilindi.

Natijalar

Tadqiqot natijalari shuni ko‘rsatdiki, nitrolanish jarayoni asosan orto- va para-holatlarda

sodir bo‘ladi. Asosiy mahsulotlar sifatida 4-nitrodifenilamin va 2-nitrodifenilamin aniqlangan.

Infraqizil spektroskopiya natijalari nitro (-NO

2

) guruhining mavjudligini tasdiqladi.

Spektroskopik tahlillar quyidagilarni ko‘rsatdi:

IR spektrida 1350-1550 cm⁻¹ atrofida nitro guruhining xarakterli cho‘qqilari kuzatildi.

NMR spektrida nitrolangan aromatik protonlarning kimyoviy siljishlari mos keluvchi

qiymatlarda ekanligi aniqlandi.

Difenilamin ((C₆H₅)₂NH), sulfat kislota (H₂SO₄) va natriy nitrat (NaNO₃) ishtirok etgan

reaktsiya nitrolash

reaktsiyasi hisoblanadi.

Bunda

difenilamin

nitratlanib, N-

nitrozodifenyilamin ((C₆H₅)₂N-NO₂) hosil bo'ladi. Reaktsiyaning tenglamasi quyidagicha:

(C₆H₅)₂NH+H₂SO₄+NaNO₃→(C₆H₅)₂NNO₂+NaHSO₄+H₂O

Reaksiya mexanizmi:

1.

Nitroniy ion (NO₂⁺) hosil bo'lishi:

Natriy nitrat (NaNO₃) sulfat kislota (H₂SO₄) bilan reaksiyaga kirishib, nitrat kislota (HNO₃)

hosil qiladi.

Nitrat kislota yana sulfat kislota bilan reaksiyaga kirishib, nitroniy ion (NO₂⁺) hosil qiladi.

Bu ion nitrolash uchun faol reagent hisoblanadi.

NaNO₃+H₂SO₄→HNO₃+NaHSO₄

HNO₃+H₂SO₄→NO₂⁺+HSO₄⁻+H₂O

2.

Difenilaminning nitrolanishi:

Nitroniy

ion

(NO₂⁺)

difenilaminning

azot

atomiga

hujum

qilib, N-

nitrozodifenylamin ((C₆H₅)₂N-NO₂) hosil qiladi.

(C₆H₅)₂NH+NO₂⁺→(C₆H₅)₂N-NO₂+H⁺

Mahsulotlar:

1.

N-Nitrozodifenilamin ((C₆H₅)₂N-NO₂): Asosiy mahsulot.


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ISSN:

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«MODERN

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АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

551

2.

Natriy Gidrosulfat (NaHSO₄): Nitroniy ion hosil bo'lish jarayonida yon mahsulot sifatida

hosil bo'ladi.

3.

Suv (H₂O): Yana bir yon mahsulot.

Difenilamin, sulfat kislota va natriy nitrat o'rtasidagi reaktsiya natijasida difenilamin

nitratlanib, N-nitrozodifenilamin hosil bo'ladi. Bu reaktsiya nitroniy ion (NO₂⁺) ishtirokida amalga

oshadigan klassik nitrolash reaktsiyasidir.

Muhokama

Olingan natijalar difenilaminning kislotali sharoitda nitrolanishi asosan elektrofilik

nitrolanish mexanizmi bo‘yicha sodir bo‘lishini tasdiqlaydi. Hujum qiluvchi elektrofil nitroniy

ioni (NO

2

-

) kuchli kislota ishtirokida hosil bo‘lib, aromatik halqaga elektrofil sifatida ta’sir qiladi.

Difenilaminning ((C₆H₅)₂NH) kislotali sharoitda nitrolanishi reaksiyasi nitrat-ionlari

(NO₃⁻) va sulfat kislota (H₂SO₄) ishtirokida sodir boʻladi. Bu jarayonda difenilamin nitrolanib,

nitrodifenilamin hosil qiladi. Quyida reaksiya tenglamalari bilan tushuntirilgan:

1. Nitrolanish reaksiyasining umumiy koʻrinishi:

Difenilamin nitrat-ionlari va sulfat kislota taʼsirida nitrolanadi. Reaksiya quyidagicha

ifodalanadi:

(C

6

H

5

)

2

NH+HNO

3

+H

2

SO

4

→(C

6

H

5

)

2

N−NO

2

+H

2

O+HSO

4

(C₆H₅)₂N-NO₂

— nitrodifenilamin (asosiy mahsulot).

Nitrodifenilamin ((C₆H₅)₂N-

NO₂) — bu difenilaminning nitrolanish mahsuloti boʻlib, uning fizik va kimyoviy xususiyatlari

quyida batafsil koʻrsatilgan:

Fizik xossalari:

1.

Holati-Nitrodifenilamin odatda qattiq kristall modda sifatida mavjud.

2.

Rangi- Sariq yoki och sariq rangga ega.

3.

Erish nuqtasi-Taxminan 65-67 °C atrofida eriydi.

4.

Qaynash nuqtasi- Yuqori haroratlarda parchalanadi, shuning uchun aniq qaynash nuqtasi

mavjud emas.

5.

Suyuqlanish xususiyati- Organik erituvchilarda (masalan, etanol, atseton, benzol) yaxshi

eriydi, lekin suvda erimaydi.

6.

Molyar massa: 214.22 g/mol.

Kimyoviy xossalari:

1.

Kimyoviy barqarorlik: Nitrodifenilamin kimyoviy jihatdan nisbatan barqaror modda

hisoblanadi. Kuchli kislotalar va ishqorlar taʼsirida parchalanmaydi.


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ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

552

2.

Reaktivlik: Nitrodifenilamin aromatik nitro birikmalarga xos reaksiyalarga kirishadi.Nitro

guruhi (-NO₂) kuchli elektrondor boʻlib, aromatik halqani elektrofil almashtirish reaksiyalariga

kamroq sezgir qiladi.

3.

Qaytarilish reaksiyasi: Nitrodifenilamin qaytarilganda aminoguruh (-NH₂) hosil qiladi.

Masalan, metall va kislota ishtirokida:

(C

6

H

5

)

2

N−NO

2

+6H

+

→(C

6

H

5

)

2

N−NH

2

+2H

2

O

Bu yerda hosil boʻlgan mahsulot aminodifenilamin ((C₆H₅)₂N-NH₂) hisoblanadi.

4.

Elektrofil almashtirish reaksiyalari:Nitro guruhi aromatik halqani deaktivatsiya qilgani

uchun, nitrodifenilamin elektrofil almashtirish reaksiyalariga (masalan, halogenlanish,

sulfolanish) kamroq sezgir boʻladi.

5.

Yonish reaksiyasi:Nitrodifenilamin yonishi natijasanda uglerod dioksid (CO₂), suv (H₂O)

va azot oksidlari (NOₓ) hosil boʻladi:

2(C

6

H

5

)

2

N−NO

2

+25O

2

→24CO

2

+10H

2

O+2NO

2

6.

Kompleks hosil qilish: Nitrodifenilamin baʼzi metallar (masalan, temir, mis) bilan

kompleks birikmalar hosil qilishi mumkin.

Toksiklik va xavfsizlik: Nitrodifenilamin zaharli modda hisoblanadi. Teri yoki nafas

yoʻllari orqali organizmga kirganda salbiy taʼsir koʻrsatishi mumkin. Yonuvchan emas, lekin

yuqori haroratlarda parchalanib, zaharli gazlar chiqarishi mumkin. Salqin, quruq joyda, toʻgʻridan-

toʻgʻri quyosh nuridan himoyalangan holda saqlanishi kerak.

Qoʻllanilishi. Nitrodifenilamin boshqa organik birikmalar sintezi uchun boshlangʻich

modda sifatida ishlatiladi. Baʼzi boʻyoq va pigmentlar tayyorlashda qoʻllaniladi. Organik kimyo

tadqiqotlarida nitrolanish reaksiyalarini oʻrganishda qoʻllaniladi.

2. Nitrat-ionlarning (NO₃⁻) sulfat kislota taʼsirida nitroniy ioniga (NO₂⁺) aylanishi:

Nitrolanish jarayonida asosiy reaktiv sifatida nitroniy ion (NO₂⁺) ishtirok etadi. Nitroniy

ion sulfat kislota taʼsirida nitrat-ionlardan hosil boʻladi:

HNO

3

+2H

2

SO

4

→NO

2

-

+H

3

O

+

+2HSO

4

3. Difenilaminning nitroniy ion (NO₂⁺) bilan reaksiyasi:

Nitroniy ion difenilamin bilan reaksiyaga kirishib, nitrodifenilamin hosil qiladi:

(C

6

H

5

)

2

NH+NO

2

+

→(C

6

H

5

)

2

N−NO

2

+H

+

(C₆H₅)₂N-NO₂

— nitrodifenilamin.

4. Umumiy reaksiya tenglamasi:


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ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

553

Yuqoridagi bosqichlarni birlashtirib, umumiy reaksiya tenglamasini quyidagicha yozish

mumkin:

(C

6

H

5

)

2

NH+NaNO

3

+2H

2

SO

4

→(C

6

H

5

)

2

N−NO

2

+NaHSO

4

+H

3

O

+

+HSO

4

Izohlar:

Nitrolanish

jarayoni elektrofil

aromatik

almashtirish mexanizmi

orqali

sodir

boʻladi.Nitroniy ion (NO₂⁺) difenilaminning aromatik halqasiga hujum qilib, nitroguruhni (-NO₂)

kiritadi.Reaksiya kislotali muhitda (H₂SO₄) yuradi, chunki sulfat kislota nitroniy ionni hosil qilish

uchun zarur.

Tajribaviy sharoitlar (reaksiya harorati va kislotali muhit) nitrolanish mahsulotlarining

nisbatiga ta’sir qiladi. Olingan mahsulotlar turli kimyoviy sohalarda, jumladan, bo‘yoqlar va

antioksidantlar sintezida qo‘llanilishi mumkin.

Xulosa

Ushbu tadqiqot difenilaminning kislotali muhitda ishqoriy nitratlar bilan ta’sirini

o‘rganishga qaratildi. Tadqiqot natijalari difenilaminning nitrolanish jarayoni elektrofil nitroniy

ionlari yordamida sodir bo‘lishini ko‘rsatdi. Tajribaviy sharoitlarning mahsulot tarkibiga ta’siri

aniqlanib, asosiy hosilalar sifatida 4-nitrodifenilamin va 2-nitrodifenilamin ajratib olindi. Ushbu

tadqiqot kimyo sanoati uchun muhim bo‘lib, organik sintez jarayonlarida qo‘llanilishi mumkin.

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ISSN:

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АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

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АММОНИЯ-ВОДА //Universum: химия и биология. – 2022. – №. 7-1 (97). – С. 60-63.


background image

ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

555

16.

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H 11 ClN 4]–H 2 O System //Russian Journal of Inorganic Chemistry. – 2021. – Т. 66. – С.

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17.

Bobozhonov Z. S., Sidikov A. A. U., Shukurov Z. S. STUDY OF SOLUBILITY OF CH 3

COOH-CO (NH 2) 2-H 2 O SYSTEM //Journal of Chemical Technology & Metallurgy. –

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18.

БОБОЖОНОВ Ж. Ш. и др. NaClO 3∙ CO (NH 2) 2-C 10 N 2 H 22 O 9-H2O

СИСТЕМАДА КОМПОНЕНТЛАРИНИНГ ЭРУВЧАНЛИГИ //Uzbek Chemical

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19.

Khusanov E., Shukhurov Z. STUDY OF SOLUBILITY PROPERTIES OF COMPONENTS

IN ACETATE UREA-TRIETHANOLAMINE-WATER SYSTEM //Journal of Chemical

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20.

Xoliyorova S., Tilyabov M., Pardayev U. Explaining the basic concepts of chemistry to 7th

grade students in general schools based on steam //Modern Science and Research. – 2024. –

Т. 3. – №. 2. – С. 362-365.

21.

Xayrullo o'g P. U. B., Rajabboyovna K. X. Incorporating Real-World Applications into

Chemistry Curriculum: Enhancing Relevance and Student Engagement //FAN VA TA'LIM

INTEGRATSIYASI (INTEGRATION OF SCIENCE AND EDUCATION). – 2024. – Т. 1.

– №. 3. – С. 44-49.

22.

Xayrullo o'g P. U. B., Umurzokovich T. M. Inquiry-Based Learning in Chemistry Education:

Exploring its Effectiveness and Implementation Strategies //FAN VA TA'LIM

INTEGRATSIYASI (INTEGRATION OF SCIENCE AND EDUCATION). – 2024. – Т. 1.

– №. 3. – С. 74-79.

23.

Narzullayev M. et al. THE METHOD OF ORGANIZING CHEMISTRY LESSONS USING

THE CASE STUDY METHOD //Modern Science and Research. – 2024. – Т. 3. – №. 5. –

С. 119-123.

24.

Xayrullo o'g P. U. et al. The essence of the research of synthesis of natural indicators,

studying their composition and dividing them into classes //fan va ta'lim integratsiyasi

(integration of science and education). – 2024. – Т. 1. – №. 3. – С. 50-55.

25.

Choriqulova D. et al. THE ROLE OF THE METHOD OF TEACHING CHEMISTRY TO

STUDENTS USING THE" ASSESSMENT" METHOD //Modern Science and Research. –

2024. – Т. 3. – №. 11. – С. 256-264.


background image

ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

556

26.

Amangeldievna J. A. et al. THE ROLE OF MODERN INFORMATION TECHNOLOGIES

IN CHEMICAL EDUCATION //International journal of scientific researchers (IJSR)

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27.

Berdimuratova B. et al. DAVRIY SISTEMANING III A GURUHI ELEMENTI

ALYUMINIYNING DAVRIY SISTEMADA TUTGAN O ‘RNI VA FIZIK-KIMYOVIY

XOSSALARINI TADQIQ ETISH //Modern Science and Research. – 2024. – Т. 3. – №. 10.

– С. 517-526.

28.

Abdukarimova M. A. Q. et al. Tabiiy fanlar o ‘qitishda STEAM yondashuvi //Science and

Education. – 2024. – Т. 5. – №. 11. – С. 237-244.

29.

Amangeldievna J. A., Xayrullo o'g P. U., Shermatovich B. J. Integrated teaching of inorganic

chemistry with modern information technologies in higher education institutions //FAN VA

TA'LIM INTEGRATSIYASI (INTEGRATION OF SCIENCE AND EDUCATION). – 2024.

– Т. 1. – №. 3. – С. 92-98.

30.

O‘G‘Li U. B. X. et al. The effectiveness of using modern information and communication

technologies (ICT) in chemistry education //Science and Education. – 2025. – Т. 6. – №. 2.

– С. 350-363.

31.

Хайдаров Г. Ш. и др. СИНТЕЗ И БИОЛОГИЧЕСКАЯ АКТИВНОСТЬ

ГИДРОХЛОРИД ХИНАЗОЛИН-4-ОНА //“Fan va taʼlim integratsiyasi” jurnalining Tahrir

hay’ati tarkibi.

32.

Ravshanov M., Xudoyberdiyev B. TEACHING CHEMISTRY BASED ON DISTANCE

EDUCATION TECHNOLOGIES (SYNCHRONOUS AND ASYNCHRONOUS

TEACHING METHODS) //Modern Science and Research. – 2024. – Т. 3. – №. 6.

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34.

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by Forming Types of Functional Literacy in Future Chemistry Teachers //Web of

Technology: Multidimensional Research Journal. – 2023. – Т. 1. – №. 7. – С. 49-53.

35.

Тилябов

М.

НАУЧНОЕ

ЗНАЧЕНИЕ

ПОДГОТОВКИ

СТУДЕНТОВ

К

МЕЖДУНАРОДНОМУ ОЦЕНОЧНОМУ ИССЛЕДОВАНИЮ //Предпринимательства

и педагогика. – 2024. – Т. 5. – №. 2. – С. 108-120.


background image

ISSN:

2181-3906

2025

International scientific journal

«MODERN

SCIENCE

АND RESEARCH»

VOLUME 4 / ISSUE 3 / UIF:8.2 / MODERNSCIENCE.UZ

557

36.

Равшанов М. И. У., Аронбаев Д. М., Аронбаев С. Д. КРИТИЧЕСКИЙ ОБЗОР

СТАНДАРТНЫХ МЕТОДОВ ОПРЕДЕЛЕНИЯ СЕРЫ В НЕФТЕПРОДУКТАХ И

МОТОРНЫХ ТОПЛИВАХ //Universum: химия и биология. – 2024. – Т. 1. – №. 9 (123).

– С. 49-70.

37.

Савуров М. Т. и др. ИЗГОТОВЛЕНИЕ ПЛЕНОЧНОГО НИТРАТ-СЕЛЕКТИВНОГО

ЭЛЕКТРОДА

В

ЛАБОРАТОРНЫХ

УСЛОВИЯХ

И

ИЗУЧЕНИЕ

ЕГО

ХАРАКТЕРИСТИК //Universum: химия и биология. – 2023. – №. 1-1 (103). – С. 55-65.

38.

Aronbaev, S. D., Aronbaev, D. M., Ravshanov, M. I., & Jabborova, G. S. (2022).

CHEMISTRY SCIENCES.

CHEMISTRY

,

95

(5).

39.

Xolmirzayev M. M. Muammoli ta’lim texnologiyalarining kimyo fanini o ‘qitishda qo ‘llash

//Science and Education. – 2024. – Т. 5. – №. 12. – С. 246-257.

40.

Abdukarimova, Marjona, and Mehroj Xolmirzayev. "KIMYO FANINI O ‘QITISHDA

NOSTANDART TESTLARDAN FOYDALANISHNING AHAMIYATI."

Modern Science

and Research

4.1 (2025): 12-20.

41.

Эргашев Э. Ю., Латипова Ё. Л. К., Хамрокулова Ф. Р. К. ФОРМИРОВАНИЕ

СОВМЕСТНОЙ РАБОТЫ ПО МЕТОДИКЕ «INSERT» ПРИ ПРЕПОДАВАНИИ

ТЕМЫ «ФИЗИКО-ХИМИЧЕСКИЕ ИЗМЕНЕНИЯ» //Universum: психология и

образование. – 2025. – Т. 1. – №. 1 (127). – С. 64-68.

42.

Akramovna T. M. THE ROLE OF NON-STANDARD EXPERIMENTS IN IMPROVING

THE COMPETENCE OF CHEMISTRY TEACHERS //Web of Teachers: Inderscience

Research. – 2024. – Т. 2. – №. 12. – С. 44-46.

43.

Yuldoshevich E. E. et al. KIMYO FANINI O ‘QITISHDA, SINFLAR KESIMIDA KRITIK

VA KREATIV FIKRLASH KO ‘NIKMASINI RIVOJLANTIRISHNING ZAMONAVIY

STRATEGIYALARI VA METODLARIDAN FOYDALANISH //Ustozlar uchun. – 2024. –

Т. 61. – №. 1. – С. 8-15.

44.

Shernazarov I. et al. Methodology of using international assessment programs in developing

the scientific literacy of future teachers //Spast Abstracts. – 2023. – Т. 2. – №. 02

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