A) \[Zn(s)+CuS{{O}_{4}}(aq)\xrightarrow{{}}\]\[Cu(s)+ZnS{{O}_{4}}(aq)\]
B) \[Cu(s)+ZnS{{O}_{4}}(aq)\xrightarrow{{}}\]\[CuS{{O}_{4}}(aq)+Zn(s)\]
C) \[Ni(s)+ZnS{{O}_{4}}(aq)\xrightarrow{{}}\]\[NiS{{O}_{4}}(aq)+Zn(s)\]
D) \[2Na(s)+CdS{{O}_{4}}(aq)\xrightarrow{{}}\] \[N{{a}_{2}}S{{O}_{4}}(aq)+Cd(s)\]
E) \[Zn(s)+NiS{{O}_{4}}(aq)\xrightarrow{{}}\]\[ZnS{{O}_{4}}(aq)+Ni(s)\]
Correct Answer: A
Solution :
\[Zn(s)+CuS{{O}_{4}}(aq)\xrightarrow{{}}Cu(s)+ZnS{{O}_{4}}(aq)\] \[Zn\xrightarrow{{}}Z{{n}^{2+}}+2{{e}^{-}}\] \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Cu\]
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