题干
强酸和强碱在稀溶液中的中和热可表示为:
H+(aq) + OH-(aq) = H2O(l); △H= -57.3kJ·mol-1，又知在溶液中反应有:
CH3COOH(aq) + NaOH(aq)= CH3COONa(aq) + H2O(l)；△H=" -" Q 1 kJ·mol-1,
H2SO4(浓)+ NaOH(aq) = Na2SO4(aq) + H2O(l) ；△H=" -" Q 2 kJ·mol-1
HNO3(aq) + KOH(aq)
KNO3（aq）+ H2O(l) ; △H =" -" Q 3 kJ·mol-1，
则Q1、Q2、Q3的关系正确的是 ( )
H+(aq) + OH-(aq) = H2O(l); △H= -57.3kJ·mol-1，又知在溶液中反应有:
CH3COOH(aq) + NaOH(aq)= CH3COONa(aq) + H2O(l)；△H=" -" Q 1 kJ·mol-1,
H2SO4(浓)+ NaOH(aq) = Na2SO4(aq) + H2O(l) ；△H=" -" Q 2 kJ·mol-1HNO3(aq) + KOH(aq)
KNO3（aq）+ H2O(l) ; △H =" -" Q 3 kJ·mol-1，则Q1、Q2、Q3的关系正确的是 ( )
A：Q 1 =' Q' 2 =' Q' 3
B：Q 2 > Q 1 > Q 3
C：Q 2 =' Q' 3 > Q 1
D：Q 2 > Q 3 > Q 1
答案(点此获取答案解析）
D
