Difference between heat of reaction at constant pressure and constant volume for the reaction given below at 25 c in kj is
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Heat of reaction at constant pressure is ΔH and at constant volume is ΔU.
ΔH-ΔU=ΔngRT
Δng=12-15=-3
ΔngRT=(-3)*(8.314*10-3KJ/mol/K)*(298 K)=-7.43
one more thing,someone may think of dividing the reaction by 2..but that will be wrong.
On multiplying by a factor,ΔH and ΔU also get multiplied by the factor
ΔH-ΔU=ΔngRT
Δng=12-15=-3
ΔngRT=(-3)*(8.314*10-3KJ/mol/K)*(298 K)=-7.43
one more thing,someone may think of dividing the reaction by 2..but that will be wrong.
On multiplying by a factor,ΔH and ΔU also get multiplied by the factor
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