Question

Помогите пожалуйста 1) CaCO3-->Ca(OH)2 2)CaO---> CaC2--> Ca(OH)2 3) CaCl2--> Ca

Answer 1

1. CaCO3 + 2KOH = Ca(OH)2 + K2CO3

2. CaO + 3C = CaC2 + CO

CaC2 + H2O = Ca(OH)2 + C2H2

3. CaCl2 + 2Na = 2NaCl + Ca