A.烷烃 | B.烯烃 | C.炔烃 | D.苯的同系物 |
溶解度(S)/g | 溶度积(Ksp) | ||
Ca(OH)2 | Ba(OH)2 | CaCO3 | BaCO3 |
0.16 | 3.89 | 2.9×10-9 | 2.6×10-9 |
A.2N2H4(g)+2NO2(g)===3N2(g)+4H2O(l) ΔH=-1135.7 kJ·mol-1 |
B.2N2H4(g)+2NO2(g)===3N2(g)+4H2O(g) ΔH=-1000.3 kJ·mol-1 |
C.N2H4(g)+NO2(g)===3/2N2(g)+2H2O(l) ΔH=-1135.7 kJ·mol-1 |
D.2N2H4(g)+2NO2(g)===3N2(g)+4H2O(g) |
A.Zn(s)+CuSO4(aq)===ZnSO4(aq)+Cu(s) ΔH=-216 kJ·mol-1,E反应物<E生成物 |
B.CaCO3(s)===CaO(s)+CO2(g) ΔH=+178.5 kJ·mol-1,E反应物<E生成物 |
C.HI(g)H2(g)+I2(s) ΔH=-26.5 kJ·mol-1,1 mol HI在密闭容器中分解达平衡后放出26.5 kJ的能量 |
D.H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1,1 L 1 mol·L-1的NaOH溶液与含0.5 mol H2SO4的浓硫酸混合后放热57.3 kJ |
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