
АНЕЛЯ ХИМИЯ 471 СЕССИЯ
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Chemistry
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University
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54 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рассчитать активность ионов (моль/л) Cu2+ в 0,1 М растворе CuSO4, если f=0,1:
10^-1
10^-2
10^-3
10^-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Вычислить ионную силу в растворе, содержащем 0,01 моль/л Ca(NO3)2 и 0,01 моль/л CaСl2 :
0.06
0.01
0.02
0.08
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рассчитать активности ионов (моль/л) Ba2+ и Сl- , если ионная сила 0,01 М раствора BaCl2 равна 0,01; f=0,3:
0,009; 0,003
0,008; 0,007
0,01; 0,001
0,002; 0,001
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выражение lgf=- 0,5z^2 под корнем I , что означает f:
коэффициент активности
активность
константу ионизации
степень ионизации
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рассчитайте активность ионов SO4 2- в растворе с ионной силой 0,0001; f=0,7
710^-5
10^-8
610^-4
10^-3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рассчитайте активность ионов PO4 3- в растворе с ионной силой 0,01; f=0,3
810^-3
710^-5
310^-2
510^-5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Определите рН, если концентрация ионов водорода в растворе равна 10^-5 моль/л:
1
2
3
5
10
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