A.Na2CO3 | B.NaHSO4 | C.NaOH | D.NaCl |
A.1×10-13mol/L | B.1×10-3mol/L | C.1×10-7mol/L | D.1×10-11mol/L |
A. |
B. |
C. |
D. |
A.物质的量浓度相同的盐酸和溶液 |
B.物质的量浓度相同的溶液和氨水 |
C.pH=3的盐酸和pH=3的溶液均稀释100倍所得溶液 |
D.pH=10的溶液和pH=10的溶液均稀释100倍所得溶液 |
A.CH3COOH(aq)+NaOH(aq)="==" CH3COONa(aq)+H2O(l) H=57.3kJ/mol | B.KOH(aq)+H2SO4(aq)= K2SO4(aq)+H2O(l)H=57.3kJ/mol | C.2C8H18(g)+25O2 (g)=16CO2 (g)+18H2O(1)H=11036 kJ/mol | D.C8H18(l)+ O2 (g)=8CO2 (g)+ 9H2O(g)H=5518 kJ/mol |
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