Which of the following statements is incorrec | vedclass

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(C) $1$. $NO_3^{\ominus}$ in acidic medium is a strong oxidizing agent and can oxidize $Cu$ to $Cu^{2+}$,whereas $H^{\oplus}$ has a standard reduction

Vedclass · Accepted Answer

Hydrogen gas can reduce Zinc ion $(Zn^{2+})$.

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(C) $1$. $NO_3^{\ominus}$ in acidic medium is a strong oxidizing agent and can oxidize $Cu$ to $Cu^{2+}$,whereas $H^{\oplus}$ has a standard reduction potential of $0.00 \ V$ and $Cu$ has $0.34 \ V$,so $H^{\oplus}$ cannot oxidize $Cu$. Statement $A$ is correct.$2$. $Cu$ is more reactive than $Ag$ ($E^{\circ}_{Cu^{2+}/Cu} = 0.34 \ V$ and $E^{\circ}_{Ag^{\oplus}/Ag} = 0.80 \ V$). $Cu$ will displace $Ag^{\oplus}$ from $AgNO_3$ solution,so it cannot be stored in a copper container. Statement $B$ is correct.$3$. The reduction potential of $Zn^{2+}/Zn$ is $-0.76 \ V$ and $H^{\oplus}/H_2$ is $0.00 \ V$. Since $Zn$ is a stronger reducing agent than $H_2$,$H_2$ gas cannot reduce $Zn^{2+}$ ions to $Zn$ metal. Statement $C$ is incorrect.$4$. $F^{\ominus}$ has the highest oxidation potential (it is the most difficult to oxidize),making it the weakest reducing agent. Statement $D$ is correct.

Which of the following statements is incorrect?

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