Copper displaces which of the following metal | vedclass

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Question

(A) According to the electrochemical series,a metal can displace another metal from its salt solution if it is more reactive (i.e.,has a more negative

Vedclass · Accepted Answer

$AgNO_3$

Vedclass · Answer

(A) According to the electrochemical series,a metal can displace another metal from its salt solution if it is more reactive (i.e.,has a more negative standard reduction potential). The standard reduction potentials $(E^\circ)$ are: $Zn^{2+}/Zn = -0.76 \ V$,$Fe^{2+}/Fe = -0.44 \ V$,$Cu^{2+}/Cu = +0.34 \ V$,and $Ag^+/Ag = +0.80 \ V$. Since $Cu$ has a lower reduction potential than $Ag$,it is more reactive than $Ag$ and can displace it from its salt solution. $Cu$ is less reactive than $Zn$ and $Fe$,so it cannot displace them. The reaction is: $Cu(s) + 2AgNO_3(aq) \rightarrow Cu(NO_3)_2(aq) + 2Ag(s)$.

Copper displaces which of the following metals from their salt solutions?

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