The heat of combustion of napthalene `{C_(10)H_(8)(s)}` at constant volume was measured to be `-5133 kJ mol^(-1)` at 298 K. Calculate the value of enthalpy change (Given `R=8.314 JK^(-1)mol^(-1)`)

Explanation

To calculate the enthalpy change (ΔH) for the combustion of naphthalene (C₁₀H₈) at constant volume, we can follow these steps:

### Step 1: Understand the relationship between ΔH and ΔU
At constant volume, the heat of combustion is equal to the change in internal energy (ΔU). Therefore, we have:
\[ \Delta U = -5133 \, \text{kJ/mol} \]

...