17. 下列式 ①-式 ③ 為 3 個已知反應的反應式，以及其個別之標準反應熱 (standard heat of reaction, \(\Delta H_r^\circ\))：請依照「黑斯定律」(Hess's law) 計算 \( \text{H}_2\text{O}_{(g)} + \text{C}_{(s)} \rightarrow \text{H}_{2(g)} + \text{CO}_{(g)} \) 之標準反應熱為多少 kJ？

① \( \text{CO}_{(g)} + \frac{1}{2}\text{O}_{2(g)} \rightarrow \text{CO}_{2(g)} \) \(\Delta H_r^\circ = -283\) kJ

 ② \( \text{C}_{(s)} + \text{O}_{2(g)} \rightarrow \text{CO}_{2(g)} \) \(\Delta H_r^\circ = -394\) kJ

 ③ \( \text{H}_{2(g)} + \frac{1}{2}\text{O}_{2(g)} \rightarrow \text{H}_{2}\text{O}_{(g)} \) \(\Delta H_r^\circ = -242\) kJ
(A) -919
(B) -353
(C) -131
(D) 131