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 ( )
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 |