酸性条件下20mL、0．5mol/L的 KMnO4溶液可将25mL、2mol/L的FeSO4溶液中的 Fe2+氧化为Fe3+，则KMnO4被还原的产物是
| A．Mn2O3 | B．Mn2+ | C．MnO2 | D．K2MnO4 |
相关试题
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| A．as a result of | B．on top of | C．in front of | D．in need of |
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| A．continued | B．immediate | C．careful | D．general |
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| A．as | B．if | C．though | D．unless |
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