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Electrolysis and Electrolytes

Which of the ...

Question

Which of the following arrangement will produce oxygen at anode during electrolysis?

Dilute

H_{2} S O_{4}

with

P t

electrodes

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Fused

N a O H

with inert electrodes

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Dilute

H_{2} S O_{4}

with

C u

electrodes

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Concentrated aqueous

N a C l

with

P t

electrodes

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Solution

The correct options are
A Dilute $H_{2} S O_{4}$ with $P t$ electrodes
B Fused $N a O H$ with inert electrodes
Dilute $H_{2} S O_{4}$ with $P t$ electrodes:
Here, as oxidation potential of $O H^{-}$ is greater than $S O_{4}^{- 2}$ so it will oxidise first and oxygen will be produced at anode.
Also, fused $N a O H$ with inert electrodes:
Here, $O H^{-}$ oxidises at anode and oxygen produces at anode.

Suggest Corrections

Similar questions

Q. When conc.

H_{2} S O_{4}

is electrolysed with high current using Pt electrodes, the product obtained at anode is:

Q. Electrolysis of an aqueous solution of

A g N O_{3}

with silver electrodes produces

(i) - - -

at cathode while

(i i) - -- -

ions are dissolved from anode. When Pt electrodes are used

(i i i) - --- -

is produced at anode and

(i v) - -- -

at cathode.

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. On electrolysis of aqueous

N a C l

solution using platinum

(P t)

electrodes, the product obtained at anode will be

The reaction taking place at the anode when an aqueous solution of $C u S O_{4}$ is electrolyzed using inert $P t$ electrodes:

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