题目列表(包括答案和解析)
N2H4是一种高效清洁的火箭燃料。0.25mol N2H4(g)完全燃烧生成氮气和气态水时,放出133.5kJ热量。则下列热化学方程式中正确的是
A.N2H4(g)+O2(g)===N2(g)+H2O(g) ΔH=+267kJ·mol-1
B.N2H4(g)+O2(g)===N2(g)+2H2O(l) ΔH=-133.5 kJ·mol-1
C.N2H4(g)+O2(g)===N2(g)+2H2O(g) ΔH=+534 kJ·mol-1
D.N2H4(g)+O2(g)===N2(g)+2H2O(g) ΔH=-534 kJ·mol-1
N2H4是一种高效清洁的火箭燃料。0.25mol N2H4(g)完全燃烧生成氮气和气态水时,放出133.5 kJ热量。则下列热化学方程式中正确的是
A.1/2N2H4(g)+O2(g)====1/2N2(g)+1/2H2O(g);ΔH=+267 kJ·mol-1
B.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =-534 kJ·mol-1
C.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =+534 kJ·mol-1
D.N2H4(g)+O2(g)====N2(g)+2H2O(l);ΔH =-133.5 kJ·mol-1
N2H4是一种高效清洁的火箭燃料。0.25mol N2H4(g)完全燃烧生成氮气和气态水时,放出133.5 kJ热量。则下列热化学方程式中正确的是
A.1/2N2H4(g)+O2(g)====1/2N2(g)+1/2H2O(g);ΔH=+267 kJ·mol-1
B.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =-534 kJ·mol-1
C.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =+534 kJ·mol-1
D.N2H4(g)+O2(g)====N2(g)+2H2O(l);ΔH =-133.5 kJ·mol-1
N2H4是一种高效清洁的火箭燃料。0.25mol N2H4(g)完全燃烧生成氮气和气态水时,放出133.5 kJ热量。则下列热化学方程式中正确的是
A.1/2N2H4(g)+O2(g)====1/2N2(g)+1/2H2O(g);ΔH=+267 kJ·mol-1
B.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =-534 kJ·mol-1
C.N2H4(g)+O2(g)====N2(g)+2H2O(g);ΔH =+534 kJ·mol-1
D.N2H4(g)+O2(g)====N2(g)+2H2O(l);ΔH =-133.5 kJ·mol-1
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