wiz-icon
MyQuestionIcon
MyQuestionIcon
57
You visited us 57 times! Enjoying our articles? Unlock Full Access!
Question

During the electrolysis of molten sodium chloride, the time required to produce 0.10 mole of chlorine gas using a current of 3 amperes is: (select the approximate ans)

A
55 minutes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
110 minutes
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
220 minutes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
330 minutes
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 110 minutes
During the electrolysis of molten sodium chloride, the following reaction is observed:
At cathode : 2Na+ + 2e2Na
At anode : 2Cl Cl2 + 2e
Net reaction : 2Na+ + 2Cl 2Na + Cl2
According to Faraday’s first law of electrolysis,
w=Z×I×t
w=E96500×I×t
No. of moles of Cl2 gas × Mol. wt. of Cl2 gas
= Eq. wt. of Cl2 gas×I××t96500

= 0.10×71=35.5×3×t96500

t=0.10×71×9650035.5×3=6433.33 sec

t=6433.3360 min = 107.22 min ~110 min
option (b) has the approximate answer and thus it is correct


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Faraday's Laws
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon