Question

Напишите уравнения реакций: Zn + 2HCl = ? + H2 ? + 2H2O = Ca(OH)2 + H2↑ NaH + H2O = NaOH + ? 2Al + 2NaOH + 6H2O = ? + 3H2↑

Answer 1

Ответ:

Zn + 2HCl → ZnCl2 + H2

Ca + 2H2O → Ca(OH)2 + H2↑

NaH + H2O → NaOH + H2↑

2Al + 2NaOH + 6H2O → 2Na[Al(OH)4] + 3H2↑

Answer 2

1. Zn + 2HCl = ZnCl2 + H2

2. Ca(OH)2 + H2O = Ca(OH)2 + H2↑

3. NaH + H2O = NaOH + H2

4. 2Al + 2NaOH + 6H2O = 2Na[Al(OH)4] + 3H2↑