Fill in the blanks :
$1.$ $E_{cell}^o$ of Daniell cell $= $ ........... .
$2.$ In Daniell cell,$n = $ ........... .
$3.$ For $Al + 3Ag^{+} \rightarrow Al^{3+} + 3Ag,$ $n = $ ...........

(A) $1.$ The standard cell potential $(E_{cell}^o)$ of a Daniell cell is $1.1 \ V$.
$2.$ In a Daniell cell,the reaction is $Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)$. Here,the number of electrons transferred $(n)$ is $2$.
$3.$ For the reaction $Al + 3Ag^{+} \rightarrow Al^{3+} + 3Ag$,the oxidation half-reaction is $Al \rightarrow Al^{3+} + 3e^-$ and the reduction half-reaction is $Ag^{+} + e^- \rightarrow Ag$. Multiplying the reduction by $3$ gives $3Ag^{+} + 3e^- \rightarrow 3Ag$. Thus,the total number of electrons transferred $(n)$ is $3$.