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]
Consider the following equatkprk(30q .tun w/ lt-d22rl qlb6zk. tions:
Equation 1:
$2ClO_3^-(aq) + I_2(aq) \rightarrow Cl_2(aq) + 2IO_3^-(aq)$
Equation 2:
$ Cl_2(aq) + 2NaOH(aq) \rightarrow NaCl(aq) + NaClO(aq) + H_2O(l)$
Which statements about these reactions is/are not correct?
I.Iodine is reduced in equation 1
II.Chlorine is reduced only in equation 1
III.Chlorine is oxidized and reduced in equation 2
A. I only
B. I and II only
C. II and III only
D. I, II, and III
参考答案: B
本题详细解析:
In equation 1, the oxidation state of Cl decreases from +5/ fkv(:ybw8 qh to 0 (reduced), and the oxidation state of Iodine inc8hb(fk / qwyv:reases from 0 to +5 ( oxidized).
In equation 2, the oxidation state of Cl increases from 0 to +1 in NaClO (oxidized), and also decreases from 0 to -1 in NaCl (reduced).
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