题目

With the development of its economy, Tianjin has changed____ recognition in the last past years. A . without B . with C . over D . beyond 答案:D已知反应:①101kPa时,C(s)+1/2O2(g)=CO(g) △H1=-110.5kJ/mol②稀溶液中,H+(aq)+OH-(aq)=H2O(l) △H2=-57.3kJ/mol下列结论正确的是A.若碳的燃烧热用△H3来表示,则△H3>△H1B.若碳的燃烧热用△H3来表示,则△H3<△H1C.浓硫酸与稀NaOH溶液反应的中和热为57.3kJ/molD.稀醋酸与稀NaOH溶液反应生成1mol水,放出57.3kJ热量
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