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Keling!!! Kimyoni birgalikda รณrganamiz๐Ÿ”ฅ
ะ”ะฐะฒะฐะนั‚ะต!!! ะ˜ะทัƒั‡ะฐะตะผ ะฒะผะตัั‚ะต ะฅะธะผะธัŽ๐Ÿ”ฅ
ustoz: Bunyod Raxmanov
Bog'lanish ๐Ÿ”— @ChemOfficer_bot
Bog'lanish ๐Ÿ”— @ProChem
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๐Ÿ” ๐Ÿ” ๐Ÿ”ค๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ”ค
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๐Ÿ” ๐Ÿ”ค๐Ÿ” ๐Ÿ” ๐ŸŸข ๐Ÿ” ๐Ÿ”ฃ
โšœ๏ธMILLIY SERTIFIKATโšœ๏ธโ€” maxsus guruhida tahlil qilinayotgan ma'lumotlardan๐Ÿ“‘

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๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ”ค๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” 
โšœ๏ธMILLIY SERTIFIKATโšœ๏ธโ€” maxsus guruhida tahlil qilinayotgan ma'lumotlardan๐Ÿ“‘

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โ€ผ๏ธโ€ผ๏ธโ€ผ๏ธ bir nechta faol a'zolardan o'qilishidan oddiy, ammo ilmiy tomondan dolzarb savol kelib tushdiโฌ‡๏ธ (repetitorlar o'rtasida ham baxsli๐Ÿ’ฌ bo'layotgan ekan). Bu baxs nega kelib chiqish manbasini juda yaxshi bilaman, qaysidir "bilimdonlar" o'rmon qonunini yaratib o'zlaricha nazariy kitob yozgan, bunday bo'lmaydi deyishsa tan olishmagan. Natijada shaxsga sig'inuvchilar va asl ilmni tanqidiy ko'rib chiquvchilar ikki komandaga ajralgan. Sizni ham qiziqtirib qo'ygan bo'lsa, shu mavzuni o'rtaga tashlayman, bir nechta savollarni anonim ovoz berish ๐Ÿซฅ shaklida beraman. Faol kanal a'zolarining fikrini o'rganayliga๐Ÿ”ฎ Ilmiy fikr bildiruvchilar esa tahlil guruhida o'z izohini qoldirsin๐Ÿ–‹
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ustozโœ๏ธ Bunyod Raxmanov
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โค๏ธโค๏ธโค๏ธ Ekvivalent massa topishning umumiy formulasi:
Anonymous Poll
30%
E=Ar/Val.
16%
E=Mr/Val.
45%
E=Mr/Val. yoki E=Ar/Val.
9%
E=M/Val.
โค1
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UNIVERSAL KIMYO
โค๏ธโค๏ธโค๏ธ Ekvivalent massani hisoblash:
Anonymous Poll
18%
zarrachalarning nisbiy massasiga asoslangan.
39%
moddalarning molyar massasiga asoslangan.
20%
zarrachalarning molyar massasiga asoslangan.
22%
moddalarning nisbiy massasiga asoslangan.
โค2
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UNIVERSAL KIMYO
โค๏ธโค๏ธโค๏ธ Ekvivalent massa birligi ..... ?
Anonymous Poll
10%
โ€” (birliksiz)
4%
g
76%
g/ekv
11%
g/mol
โค3
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UNIVERSAL KIMYO
Ekvivalent๐Ÿ†š Ekvivalent massa
Anonymous Poll
35%
๐Ÿ…ฐ๏ธ bir xil tushuncha
65%
๐Ÿ…ฑ๏ธ har xil tushuncha
โค2
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Yuqorida berilgan ''Ekvivalent (z) & Ekvivalent massa (E)" tushunchalariga quyida ovozli๐Ÿ”น shaklda ilmiy izohlar taqdim qilinadi.
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ustozโœ๏ธ Bunyod Raxmanov
kanal๐Ÿ”— @ChemOfficer
kanal๐Ÿ”— @olympic_uz_ru_en
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EKVIVALENT. EKVIVALENT MASSA

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๐Ÿง miyani charxlaymizโš”๏ธ
โœ”๏ธyechimingizni tahlil guruhida bildiring

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๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” 

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ustozโœ๏ธ Bunyod Raxmanov
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๐Ÿง miyani charxlaymizโš”๏ธ
โœ”๏ธjavobingizni tahlil guruhida bildiring

Ikkita idishda bir xil kons.li NaOH eritmalari bor. Ularning har biriga ekvimolyar miqdorda CO2 va SO2 gazlari alohida bo'ktirildi. Reaksiya to'liq reaksiyaga kirishgan bo'lsa va idishlarga lakmus eritmasidan solinsa, har bir idishda qanday rang hosil bo'ladi?

ustozโœ๏ธ Bunyod Raxmanov
kanal๐Ÿ”— @ChemOfficer
kanal๐Ÿ”— @olympic_uz_ru_en
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๐Ÿง miyani charxlaymizโš”๏ธ โœ”๏ธjavobingizni tahlil guruhida bildiring Ikkita idishda bir xil kons.li NaOH eritmalari bor. Ularning har biriga ekvimolyar miqdorda CO2 va SO2 gazlari alohida bo'ktirildi. Reaksiya to'liq reaksiyaga kirishgan bo'lsa va idishlarga lakmusโ€ฆ
๐Ÿ” ๐Ÿ”ค๐Ÿ” ๐Ÿ” ๐Ÿ” ๐Ÿ” 
Ishqor bilan gazlar ekvimolyar (teng mol miqdor) nisbatda reaksiyasi natijasida nordon tuzlar hosil bo'ladi:

SO2 + NaOH = NaHSO3

CO2 + NaOH = NaHCO3

Hosil bo'lgan NaHSO3 eritmasi lakmus rangini qizilga, NaHCO3 eritmasi esa ko'k rangga bo'yaydi.

ilmiy izoh: tuz tarkibida H borligi uchun nordon (ะบะธัะปั‹ะน) tuz deb nom berganmiz, go'yoki bunday tuzlar eritmasi tabiati doimo kislotali tabiatga (pH<7) ega sifatida qaralganday. Ammo, ilmiy tadqiqotlar shuni ko'rsatdiki, nordon tuzlarning barchasi kislotali tabiatga ega emas. Sababi, bunday tuzlarda bir vaqtning o'zida 2 xil jarayon kuzatiladi, ya'ni dissotsilanish va gidroliz:

HX(-) <โ€”> H(+) + X(2-)  Km1

HX(-) + H2O <โ€”> H2X + OH(-)  Km2

Bu jarayonlar qaytar jarayonlar (kimyoviy muvozanat) bo'lib, eritma muhitining tabiati Km qiymatiga bog'liq bo'ladi: Km1>Km2 kislotali; Km1<Km2 asosli.

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โ˜Ž๏ธ (93) 585-17-12
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ustozโœ๏ธ Bunyod Raxmanov
kanal๐Ÿ”— @ChemOfficer
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1. Xavfli oสปsmalarni davolashda ishlatiladigan element izotopini toping?
A) 40Co
B) 32P โœ”๏ธ
C) 28Fe
D) 19K

2. Trietilborat qaysi sinfga kiradi.
A) Oddiy efir
B) Tuzlar
C) Murakkab efirโœ”๏ธ
D) Kislotalar

3. 15 g sirka kislotadan 15 g glitsin olindi. Reaksiya unumini toping.
A) 50
B) 70
C) 80 โœ”๏ธ
D) 60

4. Atsetilen tirmerlanganda hosil bo'ladigan moddada pi bog'lar soni nechta ?
A) 2
B) 3 โœ”๏ธ
C) 4
D) 5

5. Yetarli miqdorda olingan alkan va kisloroddan iborat 18 ml aralashma yondirilganda 8 ml karbonat angidrid hosil boสปlsa, alkan formulasini aniqlang. (hajmlar bir xil sharoitda olingan)
A) C4H10
B) C3H8
C) C2H6 โœ”๏ธ
D) CH4

6. It gสปorida qaysi gaz koสปp tarqalgan?
A) CO
B) CO2 โœ”๏ธ
C) O2
D) N2

7. NaNO3 va NaI aralashmasi kumush nitratning 17% li eritmasida eritilsa, tuzlar toสปliq reaksiyaga kirishgan, lekin eritmaning massasi oสปzgarmagan. Olingan eritmadagi tuzning massa ulushini toping
A) 22%
B) 17% โœ”๏ธ
C) 44%
D) 34%

8 Lapochka ishlab chiqaruvchi korxonalarda qimatbaho mikrooสปgสปit hisoblanadi?
A) Molibdenโœ”๏ธ
B) Rux
C) Marganes
D) Cobalt

9. pH = 1 bo'lgan sulfat kislotaning 5 litr eritmasida (a=100%) necha mol ion bo'ladi? (Suvning dissotsilanishi hisobga olinmasin.)
A) 0,6
B) 0,75 โœ”๏ธ
C) 0,8
D) 0,45

10. 22,5 g aminokislota bilan toสปla reaksiyaga kirishish uchun NaOH ning 120 g eritmasi sarflandi. Agar natriy gidroksid eritmasi tarkibida 12,3โˆ™NA ta vodorod atomi mavjud boสปlsa, aminokislotani aniqlang.
A) valin
B) alanin
C) leysin
D) glitsinโœ”๏ธ

kanal๐Ÿ“ฃ @ChemOfficer
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