一定体积的KMnO4溶液恰好能氧化一定质量的KHC2O4?H2C2O4?2H2O.若用0.10mol?L-1的NaOH溶液中和相同质量的KHC2O4?H2C2O4?2H2O,所需NaOH溶液的体积恰好为KMnO4溶液的3倍,则KMnO4溶液的浓度为( )(提示:①H2C2O4是二元弱酸、②10[KHC2O4?H2C2O4]+8KMnO4+17H2SO4═8MnSO4+9K2SO4+40CO2↑+32H2O.A.0.008889B.0.08000C.0.1200D.0.2400
8 |
30 |
V×x |
3V×0.1mol/L |