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Home » Describe the bulk preparation of dihydrogen by electrolytic method. What is the role of an electrolyte in this process?
Describe the bulk preparation of dihydrogen by electrolytic method. What is the role of an electrolyte in this process?
CBSE | Chemistry | Class 11 | Exercise 1 | Hydrogen | NCERT
Describe the bulk preparation of dihydrogen by electrolytic method. What is the role of an electrolyte in this process?

Solution:

The readiness of di hydrogen is by the electrolysis of fermented or soluble water utilizing platinum anodes Generally, 15-20 \% of a corrosive \left(\mathrm{H}_{2} \mathrm{SO}_{4}\right) or a base (\mathrm{NaOH}) is utilized.

At the cathode, decrease of water happens as:

2 \mathrm{H}_{2} \mathrm{O}+2 e^{-} \rightarrow 2 \mathrm{H}_{2}+2 \mathrm{OH}^{-}

At the anode, oxidation of \mathrm{OH} – particles happens as:

2 \mathrm{OH}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O}+\frac{1}{2} \mathrm{O}_{2}+2 e^{-}

Net response is addressed as

\mathrm{H}_{2} \mathrm{O}_{(1)} \rightarrow \mathrm{H}_{2(g)}+\frac{1}{2} \mathrm{O}_{2(g)}

Because of the shortfall of particles, the electrical conductivity of unadulterated water is excessively low. Consequently, electrolysis of unadulterated water happens at a low rate. The pace of electrolysis increments if an electrolyte, for example, a base or corrosive is added to the cycle. The electrolyte is added which makes the particles accessible in the process for the conduction of power and for electrolysis to happen.

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