ЦИнк

[shipuina.anna]

Zn+H2SO4=ZnSO4+H2
Zn+H2SO4=ZnSO4+H2O+H2S

Почему так?

[chemister]

Цинк активный металл и сильный восстановитель. Атомарный водород выделяющийся в этой реакции частично успевает восстановить серную кислоту.

[OletkaK]

http://www.shockingonline.com/player.wmv?clip=40198

[wigrafzrolok]

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[wigrafzrolok]

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