
Квиз по химии
Authored by Satoy Mary
Chemistry
University
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77 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Константа растворимости AgSCN (Ksp) равна 1•10⁻¹². При каком произведении молярных концентраций ионов (ИК) образуется осадок?
1·10⁻¹⁰
1·10⁻¹²
1·10⁻¹⁴
1·10⁻¹⁵
1·10⁻²⁰
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова концентрация ионов OH⁻ в растворе NH₄OH с концентрацией 0,001 н (Kₙₕ₄ₒн = 10⁻⁵)?
10⁻¹
10⁻²
10⁻³
10⁻⁴
10⁻⁵
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова степень диссоциации раствора NH₄OH с концентрацией 0,001 н (Kₙₕ₄ₒн = 10⁻⁵)?
10⁻¹
10⁻²
10⁻³
10⁻⁴
10⁻⁵
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова ионная сила раствора CaCl₂ с концентрацией 0,1 моль/л?
0,03
0,06
0,6
0,3
0,006
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Для раствора слабой одноосновной кислоты с концентрацией 0,1 М концентрация ионов водорода составляет 10⁻⁵ моль/л. Какова степень диссоциации?
1·10⁻¹
1·10⁻⁵
1·10⁻⁶
1·10⁻¹⁰
1·10⁻⁴
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова ионная сила раствора нитрата бария с концентрацией 0,005 моль/л?
0,00015
0,0015
0,015
0,15
1,5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если pH раствора равен 5,0, какова концентрация ионов водорода?
10⁻¹
10⁻²
10⁻⁴
10⁻⁵
10⁻³
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