Which of the following liquid on electrolysis produce $H_{2}$ at cathode and ${C l}_{2}$ at anode?

N a C l

solution in water

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C u {C l}_{2}

solution in water

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Pure water

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H_{2} S O_{4}

solution

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Solution

The correct option is B $N a C l$ solution in water
$N a C l$ solution in water gives $H_{2}$ at cathode and ${C l}_{2}$ at anode because of low discharge potential of $H^{+}$ ions as compared to ${N a}^{+}$ (at cathode) and of ${C l}^{-}$ as compared to ${O H}^{-}$ ions (due to over voltage).

$2 H^{+} + 2 e^{-} - ------ \to H_{2} (g)$ (at cathode)

$2 {C l}^{-} - 2 e^{-} - ------ \to {C l}_{2} (g)$ (at anode)

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Similar questions

Q. Assertion :The electrolysis of NaCl solution gives

H_{2}

(g) at cathode and

C l_{2}

(g) at anode. Reason:

C l_{2}

has higher oxidation potential than

H_{2} O

Given are the reactions occuring during the electrolysis of sodium chloride solution:

$2 C l^{-} \to C l_{2} + 2 e^{-}$
$2 H_{2} O + 2 e^{-} \to H_{2} + 2 O H^{-}$

Which of the following is correct regarding liberation of electrolytic products?

Which of the following statements are correct?

a) The electrolysis of aqueous NaCl produces hydrogen gas at the cathode and chlorine gas at the anode .

b) The electrolysis of a $C u S O_{4}$ solution using Pt electrodes causes the liberation of $O_{2}$ at the anode and the deposition of copper at the cathode .

c) Oxygen and hydrogen are produced at the anode and cathode during the electrolysis of dilute aqueous solution of $H_{2} S O_{4}$ .

d) All electrolytic reactions are redox reactions .

Q. Which of the following gives

C l_{2}

gas at an anode and

H_{2}

gas at cathode on electrolysis?

Q. In the electrolysis of

C u C l_{2}

solution, the mass of cathode increased by

6.4 g

. What occurred at copper anode?

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Which of the following liquid on electrolysis produce H2 at cathode and Cl2 at anode?

Which of the following liquid on electrolysis produce $H_{2}$ at cathode and ${C l}_{2}$ at anode?