本题目来源于试卷: Mechanisms of Chemical Change F.2 Electron Transfer Reactions，类别为 IB化学
[单选题]
What happens to the 9q, 4,cs uqzll4tp*vd ,u n1bhe50;1fm q*tvhgu8 ekr$Mn^{3+}_{(aq)}$ ion when it is converted to $MnO_{4(aq)}^-$
A. Its oxidation number decreases and it undergoes reduction
B. Its oxidation number increases and it undergoes oxidation
C. Its oxidation number increases and it undergoes reduction
D. Its oxidation number decreases and it undergoes oxidation
参考答案: B
本题详细解析:
Oxidation state of Mn l;kpyx4+s/l vin $MnO_4^-$ is +7. The change in oxidation state is from +3 to +7.
Oxidation refers to an increase in oxidation state.
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