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 is the reducing agent in this reactiic ;+m50c l azyjpl* 46lm:rbdo;+d :kg-frje hmk 3pj1n?
$Zn_{(s)} + 2NO_{3(aq)}^-$ + 4H^+_{(aq)} \rightarrow Zn^{2+}_{(aq)} + 2NO_{2(g)} + 2H_2O_{(I)}$
A. $Zn_{(s)}$
B. $NO_{3(aq)}^-$
C. $Zn^{2+}_{(aq)}$
D. $H^+_{(aq)}$
参考答案: A
本题详细解析:
Reducing agent is a substance that is oxidized.
Oxidation state of Zn inchf(yiff x;0w,a;s)(ko9f2 pj lw s4ixreases from 0 to +2, whereas )j y;f a l,x(9f2wi4s0fp iw;s kf(hxothe oxidation state of N decreases from +5 to +4.
The oxidation state of H remains +1.
The oxidation state of O remains -2.
| 
