3drugasikaoztup3
20.06.2021 07:42

4. Осуществить цепочку превращений.
Br2-HBr-KBr-KCl-Cl2-HClO

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Ответ:
Ayazoro2
06.07.2020 12:06

1) Уравнение реакции:

Na₂O + CO₂ = Na₂CO₃ - соль натрия карбонат

2) Находим массу 1 моля  натрия карбоната:

М(Na₂CO₃) = 2*23 + 12 + 3*16 = 106 г/моль

3) 1 моль любого газа при норм. условиях занимает объем 22,4 л. Значит оксид углерода объемом 2,24 л составляет 0,1 моль.

4) Смотрим на уравнение реакции: из 1 моля углекислого газа СО₂ получается 1 моль натрия карбоната Na₂CO₃ , значит из 0,1 моль СО₂ образуется 0,1 моль Na₂CO₃, а по массе это будет:

0,1 * 106 = 10,6 г

ответ: 10,6 г натрия карбоната Na₂CO₃

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Ответ:
DayanaEstDetei
08.01.2022 16:27

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