將氫氣與氧氣反應得 1 莫耳水蒸氣，放熱 243KJ。上述反應的熱反應式表示法，何者正確？(A)2H2(g)＋O2(g) → 2H2O(g)＋243KJ (B)2H2(g)＋O2(g) → 2H

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23.將氫氣與氧氣反應得 1 莫耳水蒸氣，放熱 243KJ。上述反應的熱反應式表示法，何者正確？
(A)2H2(g)＋O2(g) → 2H2O(g)＋243KJ
(B)2H2(g)＋O2(g) → 2H2O(g)＋486KJ
(C)
(D)
(E)

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