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题型:单选题 题类:常考题 难易度:普通
江苏省盐城中学2016-2017学年高三下学期化学开学考试试卷
① CH4(g) = C(s)+2H2(g) △H1 = + 75.0 kJ·mol-1
② CO2(g)+H2(g) = CO(g)+H2O(g) △H2 = + 41.0 kJ·mol-1
③ CO(g)+H2(g) = C(s)+H2O(g) △H3 = -131.0 kJ·mol-1
Na2O2(s)+CO2(g)=Na2CO3(s)+ O2(g) △H=-226kJ/mol
根据以上热化学方程式判断,下列说法正确的是( )
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