1. Tardigrade
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  3. Chemistry
  4. Ethane gas is obtained in Kolbe's electrolysis of CH 3 COONa according to the following reaction <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/e58addb023cdc2e259ffdb741cf68bc2-.png /> What volume of gas (ethane gas) at S.T.P. would be obtained by a current of 0.5 amp (80 % efficient ) ; if the current is passed for 965 min ?

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Q. Ethane gas is obtained in Kolbe's electrolysis of $CH _{3} COONa$ according to the following reaction
image
What volume of gas (ethane gas) at S.T.P. would be obtained by a current of 0.5 amp $(80 \%$ efficient $) ;$ if the current is passed for $965 \,min ?$

Electrochemistry

Solution:

n-factor = total no. of $e ^{-}$ involved per molecule

$\Rightarrow $ No. of $e ^{-}$ releted to 1 molecule of $C _{2} H _{6}=2$

$\Rightarrow $ So n factor $=2$

$gm$ eq. $\left( C _{2} H _{6}\right)=$ Faraday

Moles $\times n$ factor $=\frac{\text { it }}{96500}$

$\frac{ V _{ L }}{22.4} \times 2=\frac{0.5 \times \frac{80}{100} \times 965 \times 60}{96500}$

$V _{ L }=2.688 L$