6. Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

$Pt$ $\mid H _{2}$ $(g,1 \,bar)$ $\left| H ^{+}( aq ) \| Cu ^{2+}( aq )\right| Cu ( s )$

is $0.31\, V$. The $pH$ of the acidic solution is found to be $3 ,$ whereas the concentration of $Cu ^{2+}$ is $10^{- x } \,M$. The value of $x$ is $.....$

(Given: $E _{ Cu ^{2+} / Cu }^{\ominus}=0.34 \,V$ and $\frac{2.303 RT }{ F }=0.06\, V$ )

Product  $ X$ is

$Cu^{+2} +e^-\to Cu^+\,\,\,\,\,E^o = 0.15\,volt$

$Cu^{+2} + 2e^-\to Cu\,\,\,\,\,E^o = 0.34\, volt$

What will be the $E^o$ for half cell

$Cu^+ + e^-\to Cu$ ? ........... $\mathrm{volt}$