
Analitik kimyo 3
Quiz
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Chemistry
•
University
•
Medium
Ulmasbek Muminov
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61 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Miqdoriy taxlilda oksidlanish-qaytarilish reaksiyalarini qo‘llash uchun E.Yu.K.ning qiymati qanday bo’lishi kerak?
Istalgan qiymat bo’lishi mumkin.
0,4-0,5 B dan kam bo’lmasin
0,4-0,5 B dan kup bo’lmasin.
0,1-0,2 B dan kam bo’lmasin.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Redoksimetrik qoldiqni titrlash mohiyatini ko’rsating?
Oksidlovchi-qaytariluvchini titrlash
Qaytaruvchi-oksidlovchini titrlash
Oksidlanish-qaytarilish reaksiyasiga sarf bo‘lgan birinchi titrant qoldig‘ini titrlash
Bir eritmani boshqa eritma bilan titrlash
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oksidlanish-qaytarilish titrlashdagi indikatorlarni xatoligi qanday sodir bo‘ladi?
Titrlanuvchi hajm bilan ta’sirlashaetgan modda konsentratsiyasini mos kelmasligidan.
Redoks juftni oksidlangan va qaytarilgan shakllari konsentratsiyalari nisbatini mos kelmasligidan.
Titrlashni oxirgi nuqtasini ekvivalent nuqta bilan mos kelmasligidan.
Ta’sirlashayotgan redoks juft potensialini indikatorni rang o‘zgarish intervali bilan mos kelmasligidan.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Redoksimetrik titrlash usullarining birida va alkalimetriyada standart sifatida ishlatiladigan moddani ko‘rsating?
Na2CO3*10H2O
H2C2O4*2H2O
K2Cr2O7
Na2B4O7*10H2O
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Aniqlanuvchi modda bo’yicha titr ta’rifini ko’rsating?
Berilgan normallikdagi titrantning 1sm3 iga to‘g‘ri kelgan aniqlanuvchi moddaning grammlari soni
Titrlanuvchi eritma 1sm3 ning molyar konsentratsiyasi
Titrantning 1 dm3 eritmasidagi titrlanuvchi moddaning grammlar soni
Titrlanuvchi eritmaning 1 sm3 dagi mollari soni
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nima uchun kaliy permanganatdan standart eritma tayyorlanmaydi?
Undan aniq tortim bo’yicha standart eritma tayyorlash mumkin
Kuchli oksidlovchi bo‘lgani uchun suvdagi qaytaruvchilar ta’sirida konsentratsiyasini o‘zgartiradi
Kuchli oksidlovchi va gramm ekvivalentini o‘zgartirmaydi
Kuchli qaytaruvchi va o‘zining gramm ekvivalentini o‘zgartiradi
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
H2C2O4*2H2O redoksimetriyaning qaysi usuli uchun standart eritma bo‘ladi?
Nitritometriya
Permanganatometriya
Atsidimetriya
Serimetriya
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