Rate of disappearance of the reactant at two different temperature is given by }

Rate of disappearance of the reactant \( \boldsymbol{A} \) at two different temperature is given by \( \boldsymbol{A} \rightleftharpoons \boldsymbol{B} \) \( \frac{-\boldsymbol{d}[\boldsymbol{A}]}{\boldsymbol{d t}}=\left(\boldsymbol{2} \times \mathbf{1 0}^{-2} \boldsymbol{S}^{-1}\right)[\boldsymbol{A}]-\boldsymbol{4} \times \) \( \mathbf{1 0}^{-3} \boldsymbol{S}^{-\mathbf{1}}[\boldsymbol{B}], \boldsymbol{T}=\mathbf{3 0 0} \boldsymbol{K} \) \( \frac{-\boldsymbol{d}[\boldsymbol{A}]}{\boldsymbol{d t}}=\left(\boldsymbol{4} \times \mathbf{1 0}^{-2} \boldsymbol{S}^{-1}\right)[\boldsymbol{A}]-\mathbf{1 6} \times \) \( \mathbf{1 0}^{-\mathbf{4}}[\boldsymbol{B}], \boldsymbol{T}=\mathbf{4 0 0} \boldsymbol{K} \) Calculate heat of reaction in the given temperature range, when equilibrium is \( \operatorname{set} \) up.

• A. \( 16.06 k J \)
• B. \( 23.04 k J \)
• C. \( 26.78 k J \)
• D. \( 29.34 k J \)