The standard enthalpies of formation of and CaO are and respectively. For the reaction , the standard reaction enthalpy kJ. (Round off to the Nearest Integer).

Question

The standard enthalpies of formation of  and CaO are  and  respectively. For the reaction , the standard reaction enthalpy   kJ. (Round off to the Nearest Integer).

Canvas Classes · Accepted Answer

Strategy:
 Use standard enthalpies of formation to calculate the reaction enthalpy: .

Step 1: Calculate 
Products:  (),  ().
Reactants:  (),  ().

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