Make up the reaction equations, the schemes of which are given below: a) Ca → CaO → Ca (OH) 2 → Ca (NO3) 2 → CaSO4; b) SO3 → Zn (OH) 2 → ZnSO4 → ZnO
а)2 Ca + O2 = 2 CaO
CaO + H2O = Ca (OH) 2
Ca (OH) 2 + N2O5 = Ca (NO3) 2 + H2O
б)H2SO4 + Ca (NO3) 2 = 2 HNO3 + CaSO4
H2SO4 + Zn (OH) 2 = ZnSO4 + 2H2O
ZnSO4 = ZnO + SO3↑
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