a) CaO + H2O = Ca(OH)2
CaO + CO2 = CaCO3
CaO + 2HNO3 = Ca(NO3)2 + H2O
б) SO2 + H2O = H2SO3
SO2 + Ca(OH)2 = CaSO3 + H2O
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Answers & Comments
a) CaO + H2O = Ca(OH)2
CaO + CO2 = CaCO3
CaO + 2HNO3 = Ca(NO3)2 + H2O
б) SO2 + H2O = H2SO3
SO2 + Ca(OH)2 = CaSO3 + H2O