24.6. 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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