Question

Цепочки превращений

Ca-CaO-Ca(OH)2-CaCO3-CaCl2

Cu(OH)2-CuO-Cu(NO3)2-Cu(OH)2

Answer 1

2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + CO = CaCO3 + H2
CaCO3 + 2HCl = CaCl2 + CO2↑ + H2O

Cu(OH)2 = CuO + H2O
CuO + 2HNO3 = Cu(NO3)2 + H2O
Cu(NO3)2 + 2NaOH = Cu(OH)2↓ + 2NaNO3