Оксиды серы
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Сабина Сергеевна
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20 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
В результате реакции Na + O2 = …, образуется
пероксид натрия
оксид натрия
реакция не протекает
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Для обнаружения кислорода используется:
Тлеющая лучинка
Горящая лучинка
Потушенная лучинка
Пламе спиртовки
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
При получении кислорода методом вытеснения воздуха, пробирку в которую собирают кислород, нужно держать:
Горизонтально
Дном вверх
Дном вниз
Не имеет значения
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Степени окисления серы изменяются с +6, -2, 0 в группе веществ:
Na2SO4, K2S, S
H2SO4, SO2, H2S;
SO3, K2SO3, S
S, SO2, SO3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Схема превращения S+6 ? S+4 соответствует уравнению реакции
SO3 + H2O → H2SO4
2SO2 + O2 → 2SO3
H2SO4 + Zn → ZnSO4 + H2↑
Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Для осуществления превращения H2S→SO2→SO3→K2SO4 нужно последовательно использовать:
Воду, кислород, оксид калия
Кислород, кислород, гидроксид калия
Кислород, воду, калий
Воду, кислород, карбонат калия
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Укажите продукт реакции: Al + S =...
AlS3
Al2S3
Al2S
Al3S2
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