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QNEET-2016-Ch-1098: NEET 2016 Chemistry - Class 12 NEET-2016-Ch-1098 Solution: During the electrolysis of molten sodium chloride the time…
During the electrolysis of molten sodium chloride the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is 55 minutes 110 minutes 220 minutes 330 minutes
Multiple Choice Options
- A 55 minutes
- B 110 minutes
- C 220 minutes
- D 330 minutes
Step-by-Step Verified Solution
At cathode : 2Na +
+ 2e �
_ 2Na
At anode : 2Cl � _
Cl 2
+ 2e �
----------------------------------------------
Net reaction: 2Na +
+ 2Cl � _ 2Na + Cl 2
From Faraday�s first law of electrolysis,
w = Z _ I _ t
= E 96500 _ I _ t
No. of moles of Cl 2
gas _ Mol. wt. of Cl 2
gas
= E q . w t . o f C l 2 g a s _ I _ t 96500
_ 0.10 _ 71 = 35.5 _ 3 _ t 96500
_ t = 0.10 _ 71 _ 96500 35.5 _ 3
= 6433.33 sec
= 107.22 min _ 110 min