In the industrial production of which of the following, molecular hydrogen is obtained as a by product?

Option 1 - NaOHO

Option 2 -  NaCl

Option 3 - Na metal

Option 4 - Na2CO3

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Answered by

Alok Kumar Singh | Contributor-Level 10

6 months ago

Correct Option - 1

Detailed Solution:

NaOH is obtained by electrolysis of NaCl. Solution of NaCl using Hg cathode

$\begin{array}{l} C a t h o d e : N a^{+} + e \to_{}^{H g} N a - A m a l g a m \\ A n o d e : 2 C l^{-} \to C l_{2} + 2 e \\ 2 N a - A m a l g a m + 2 H_{2} O \to 2 N a O H + 2 H g + H_{2} \end{array}$

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