
химия растворов
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой процесс преобладает при растворении поваренной соли в воде?
Только физический
Только химический
Физико-химический
Термический
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Как называется раствор, содержащий максимально возможное количество вещества при данных условиях?
Ненасыщенный
Насыщенный
Пересыщенный
Разбавленный
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Какое уравнение правильно отражает диссоциацию уксусной кислоты?
CH₃COOH → CH₃COO⁻ + H⁺
CH₃COOH → CH₄ + CO₂
CH₃COOH + H₂O → CH₃COO⁻ + H₃O⁺
CH₃COOH → C + H₂O + CO
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой показатель характеризует кислотность среды?
pOH
pH
Eh
Kₛ
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Как изменяется pH при добавлении щёлочи к воде?
Увеличивается
Уменьшается
Не изменяется
Сначала увеличивается, затем уменьшается
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какое вещество является сильным электролитом?
Уксусная кислота
Глюкоза
Хлорид натрия
Этанол
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какой процесс происходит при нейтрализации кислоты щёлочью?
Окисление
Восстановление
Образование воды и соли
Гидролиз
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