Home
Class 11
CHEMISTRY
On electrolysis of dil. sulphuric acid u...

On electrolysis of dil. sulphuric acid using a platinum (Pt) electrode, the product obtained at anode will be

A

hydrogen gas

B

oxygen gas

C

`H_(2)S` gas

D

`SO_(2)` gas

Text Solution

Verified by Experts

The correct Answer is:
B
During electrolysis of dilute sulphuridc acid the following reaction takes place at anode.
`2H_(2)O_((l)) rarr O_(2(g))+4H_((aq))^(+)+4e^(-), E_("cell")^(@)=+1.23V`
i.e., `O_(2(g))` will be liberated at anode.
Promotional Banner

Similar Questions

Explore conceptually related problems

On electrolysis of dilute sulphuric acid using platinum electrodes, the product obtained at the anode will be

Electrolysis is the process in which electrical energy is converted to chemical energy. In electrolytic cell, oxidation takes place at anode and reduction at cathode. Electrode process depends on the electrode taken for electrolysis. Amount of substance liberated at an electrode is directly propertional to the amount of charge passed through it. The mass of substance liberated at electrode is calculated using the following relation : m= ("ItE")/(96500) Here, E represents the equivalent mass and 96500 C is called the Faraday constant. Faraday (96500 C) is the charge of 1 mole electron, i.e., 6.023 xx 10^(23) electrons, it is used to liberate one gram equivalent of the substance. On electrolysis of dilute sulphuric acid using platinum electrodes, the product obtained at the anode will be :

In electrolysis of very dilute of NaOH using platinum electrodes

The electrolytic decomposition of dilute sulphuric acid with platinum electrode, cathodic reaction is :