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已知：H 2 O(g)===H 2 O(l) Δ H ＝— Q 1 kJ·mol －1 C 2 H 5 OH(g)===C 2 H 5 OH(l) Δ H ＝— Q 2 kJ·mol －1 C 2 H 5 OH(g)＋3O 2 (g)===2CO 2 (g)＋3H 2 O(g) Δ H ＝— Q 3 kJ·mol －1 若使46 g液态酒精完全燃烧，最后恢复到室温，则放出的热量为( )A.
( Q 1 ＋ Q 2 ＋ Q 3 ) kJ
B.
( Q 2 —3Q 1 — Q 3 ) kJ
C.
(0.5 Q 1 －1.5 Q 2 ＋0.5 Q 3 ) kJ
D.
(3 Q 1 － Q 2 ＋ Q 3 ) kJ
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