下列各组热化学方程式程中，△H的绝对值前者大于后者的是[]①C(s)＋O2(g)＝CO2(g)；△H1C(s)＋1/2O2(g)＝CO(g)；△H2②S(s)＋O2(g)＝SO2(g)；△H3S(g)
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题目简介
下列各组热化学方程式程中，△H的绝对值前者大于后者的是[]①C(s)＋O2(g)＝CO2(g)；△H1C(s)＋1/2O2(g)＝CO(g)；△H2②S(s)＋O2(g)＝SO2(g)；△H3S(g)
题目详情
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②S(s)＋O2(g)＝SO2(g)；△H3 S(g)＋O2(g)＝SO2(g)；△H4
③H2(g)＋1/2O2(g)＝H2O(l)△H5 2 H2(g)＋O2(g)＝2H2O(l)；△H6
A．①
B．②
C．② ③
D．①②③
答案