问题描述:
在101325Pa和298K条件下,2molH2生成水蒸汽放出484KJ热量,下列热化学方程式正确的是
A. 2H2+O2=2H2O;△H=-484kJ/mol
B. H2O(g)= H2(g)+ 1/2O2(g);△H=+242kJ/mol
C. 2H2(g)+ O2(g)=2H2O(l);△H=-484kJ/mol
D. H2(g)+ O2(g)= H2O(g); △H=+242kJ/mol
A. 2H2+O2=2H2O;△H=-484kJ/mol
B. H2O(g)= H2(g)+ 1/2O2(g);△H=+242kJ/mol
C. 2H2(g)+ O2(g)=2H2O(l);△H=-484kJ/mol
D. H2(g)+ O2(g)= H2O(g); △H=+242kJ/mol
问题解答:
我来补答展开全文阅读