在标准状况下,石墨燃烧反应的焓变为-393.7 kJ/mol,金刚石燃烧反应的焓变为-395.6 kJ/mol。则石墨转变为金刚石的反应焓变为( )。A....

作者: tihaiku 人气: - 评论: 0
问题 在标准状况下,石墨燃烧反应的焓变为-393.7 kJ/mol,金刚石燃烧反应的焓变为-395.6 kJ/mol。则石墨转变为金刚石的反应焓变为( )。
选项 A.-789.3 kJ/mol B.+1.9 kJ/mol C.-1.9 kJ/mol D.0
答案 B
解析

相关内容:标准,状况,石墨,反应,-393.7,金刚石,-395.6

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