A.1×10-13mol/L | B.1×10-3mol/L |
C.1×10-7mol/L | D.1×10-11mol/L |
A.V1=V2=V3 | B.V1>V2>V3 |
C.V3>V1>V2 | D.V1=V2<V3 |
A.10 | B.50 | C.5×103 | D.104 |
A.a=b/2 | B.b=a+0.02 | C.a=b+0.02 | D. a=b+0.01 |
A.pH=2与pH=1的硝酸中c(H+)之比 |
B.Na2CO3溶液中c(Na+)与c(CO32ˉ )之比 |
C.0.2mol/L与0.1mol/L醋酸中c(H+)之比 |
D.NO2溶于水时,被氧化的n(NO2)与被还原的n(NO2)之比为 |
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