$Pt(s)|{H_2}(g)(1\,bar)|{H^ + }(aq)(1\,M)||{M^{3 + }}(aq),{M^ + }(aq)|Pt(s)$

At 298 K, a 1 litre solution containing 10 mmol of $\mathrm{C{r_2}O_7^{2 - }}$ and 100 mmol of shows a pH of 3.0.

A metal surface of $100 \mathrm{~cm}^{2}$ area has to be coated with nickel layer of thickness $0.001 \mathrm{~mm}$. A current of was passed through a solution of for '' seconds to coat the desired layer. The value of is __________. (Nearest integer) ( (density of Nickel) is , Molar mass of Nickel is

At $298 \mathrm{~K}$, the standard reduction potential for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ electrode is .

Cu(s) + Sn²⁺ (0.001M) $\to$ Cu²⁺ (0.01M) + Sn(s)

The Gibbs free energy change for the above reaction at 298 K is x $\times$ 10^$-$1 kJ mol. The value of x is __________. [nearest integer]

The mass of silver (Molar mass of $\mathrm{Ag}: 108 \mathrm{~gmol}^{-1}$ ) displaced by a quantity of electricity which displaces of at S.T.P. will be ______ g.

One Faraday of electricity liberates $x \times 10^{-1}$ gram atom of copper from copper sulphate. $x$ is ________.

The resistance of a conductivity cell containing 0.01 M KCl solution at 298 K is 1750 $\Omega$. If the conductivity of 0.01 M KCl solution at 298 K is 0.152 $\times$ 10^$-$3 S cm cm.

A constant current was passed through a solution of $\mathrm{AuCl}_4^{-}$ ion between gold electrodes. After a period of 10.0 minutes, the increase in mass of cathode was . The total charge passed through the solution is _______ .