$CH_3-CH_2-OH$ $\mathop {\xrightarrow{{(i)\,KMn{O_4}/\mathop O\limits^\Theta H/\Delta }}}\limits_{(ii)\,{H^ \oplus }} (A)\mathop {\xrightarrow{{(i)\,SOC{l_2}}}}\limits_{(ii)\,N{H_3}/\Delta } (B)$ $\xrightarrow{{B{r_2}/KOH}}(C)$
$(C)$ will be :
$CH _3- CH _2- OH \underset{\text { (ii) } H ^{\oplus}}{\stackrel{\text { (i) } KMnO _4 / O ^{\ominus} H / \Delta}{\longrightarrow}} CH _3-\underset{\text { (A) }}{ COOH } \underset{\text { (ii) } NH _3 / \Delta}{\stackrel{\text { (i) } SOCl _2}{\longrightarrow}} CH _3-CONH _2 \stackrel{ Br _2 / KOH }{\longrightarrow} CH _3 NH _2$
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(Use $\mathrm{R}=0.083 \mathrm{~L}$ bar mol $\mathrm{m}^{-1} \mathrm{~K}^{-1}$ )
$Cu^{+2} + 2e^-\to Cu$ ; $E^o = X_2$ then the value of $E^o$ for $Cu^{+2} + e^-\to Cu^+$ will be