Kolbe discovered the method of preparation of hydrocarbon in which sodium salt of carboxylic acid is electrolyzed. If aqueous solution of CH3COONa is electrolyzed by a current of 19.3 A passed for T second and total volume of gas collected at anode and cathode is 268.8 mL at S.T.P. then value of T is

Kolbe discovered the method of preparation of hydrocarbon in which sodium salt of carboxylic acid is electrolyzed. If aqueous solution of CH₃COONa is electrolyzed by a current of 19.3 A passed for T second and total volume of gas collected at anode and cathode is 268.8 mL at S.T.P. then value of T is

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B
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D

Solution:

At STP, one mole of gas occupies 22400 mL of volume, the moles of gas present in 268.8 mL of gas.

$Moles of gas = 268.8 L \times \frac{1 mol}{22.4 L} = 0.012 mol$

According to Faradays Law:

Amount of Faraday pass=number of equivalents

$\frac{i \times t}{96500} = \frac{mole}{n - factor} \frac{19.3 \times t}{96500} = \frac{0.012}{1} t = 60 seconds$

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