The standard heat of reaction is expressed as

(a) \(\Delta H_{\text {Reaction }}^{0}=\Sigma \Delta H_{\text {Reactants }}^{0}-\Sigma \Delta H_{\text {Products }}^{0}\)

(b) \(\Delta H_{\text {Reaction }}^{0}=\Sigma \Delta H_{\text {Products }}^{0}-\Sigma \Delta H_{\text {Reactants }}^{0}\)

(c) \(\Delta H_{\text {Reaction }}^{0}-\Sigma \Delta H_{\text {Products }}^{0}=\Sigma \Delta H_{\text {Reactants }}^{0}\)

(d) \(\Delta H_{\text {Reaction }}^{0}-\Sigma \Delta H_{\text {Reactants }}^{0}=\Sigma \Delta H_{\text {Products }}^{0}\).