The standard reduction potentials of 2 {\H}^{+} {\H}, {\Cu}^{2+} \/ {\Cu}, {\Zn}^{2+} \/ {\Zn} and {\NO}_3^{-}, {\H}^{+} {\NO} are 0.0,+0.34, -0.76 and 0.97 {\V} respectively. Observe the following reactions I. {\Zn}+ {\HCl} \rightarrow II. {\Cu}+ {\HCl} \rightarrow III. {\Cu}+ {\HNO}_3 \rightarrow Which reactions does not liberate {\H}_2( {\g}) ? [AP EAPCET 20 May 2024 Shift 2]

Correct Answer is : II, III only

Electrochemistry

Section: Chemistry

Question : 16 of 20

Marks: +1, -0

The standard reduction potentials of 2H+H,Cu2+∕Cu,Zn2+∕Zn and NO3−,H+‌NO are 0.0,+0.34, -0.76 and 0.97V respectively. Observe the following reactions
I. Zn+HCl⟶
II. Cu+HCl⟶
III. Cu+HNO3⟶
Which reactions does not liberate H2(g) ?

[AP EAPCET 20 May 2024 Shift 2]

II, III only
I, II only
I, III only
I, II, III

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