40. Решение задачи по химии №004 043

207. Based on the thermochemical equations below, determine the heat effect of the reaction CaCO3 CO2 H2O = Ca(HCO3)2:
1) CaO H2O \u003d Ca (OH) 2; = -65.3 kJ
2) CaOCO2= CaCO3; = -174.5 kJ
3) Ca(OH)2 2CO2 = Ca(HCO3)2; = –128.0 kJ.

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