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A 4.0 molar aqueous solution of NaCl is ...

A 4.0 molar aqueous solution of NaCl is prepared and 500mL of this solution is electrolysed. This leads to the evolution of chlorine gas at one of the electrodes (Atomic mass: Na= 23: Hg=200, 1 faraday= 96500 coulomb)
The total number of moles of chlorine gas evolved is

A

`0.5`

B

`1.0`

C

`2.0`

D

`3.0`

Text Solution

Verified by Experts

The correct Answer is:
B
Number of moles of NaCl `=(MV)/(1000) = (4 xx 500)/(1000) = 2`
`2Cl^(-) rarr Cl_(2) + 2e^(-) 2 mol Cl^(-)` ions give 1 mol `Cl_(2)`
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