Enthalpies of formation of , , and HCl are , , and respectively. The magnitude of enthalpy of the reaction given below is . (nearest integer)

Question

Enthalpies of formation of , ,  and HCl are , ,  and  respectively. The magnitude of enthalpy of the reaction given below is  . (nearest integer)

Canvas Classes · Accepted Answer

Strategy:
 Apply Hess's Law: .

Step 1: Identify all  values
Products:  (),  ().
Reactants:  (),  ().

Step 2: Calculation

.
Magnitude .

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