The difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25° C in kJ is:

Question

The difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25° C in kJ is: (A) -7.43 (B) +3.72 (C) -3.72 (D) +7.43

Tardigrade Admin · Accepted Answer

Δ H-Δ U=Δ n R T =-3 × 8.314 × 298=-7432 J =-7.43 kJ

Q. The difference between heat of reaction at constant pressure and constant volume for the reaction given below at $2 5^{\circ} C$ in $k J$ is:

$- 7.43$

$+ 3.72$

$- 3.72$

$+ 7.43$

$Δ H - Δ U = Δ n RT$
$= - 3 \times 8.314 \times 298 = - 7432 J = - 7.43 k J$

Q. The difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25∘C in kJ is:

−7.43

+3.72

−3.72

+7.43