At STP, Enthalpy of combustion of benzene (l) and acetylene (g) are and respectively. The for is:

Question

At STP, Enthalpy of combustion of benzene (l) and acetylene (g) are  and  respectively. The  for  is:

Canvas Classes · Accepted Answer

Strategy:
 Apply Hess's Law using the enthalpies of combustion. The enthalpy change of a reaction can be calculated as: .

Step 1: Write the balanced equation

Step 2: Perform the calculation

.

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