September 2021 0 5 Report
Выберите химические реакции для лабораторных способов получения водорода:
1) Zn + H2SО4 = ZnSО4 + H2↑
2) CH4 + 2Н2О = СО2↑ + 4Н2↑
3) Zn + 2НСl = ZnCl2 + Н2↑
4) СН4 = С + 2Н2↑
5) 2Н2О = 2Н2↑ + О2↑
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