Redox Reactions And Electrochemistry Ques 611
Question: A solution of copper sulphate $ ( CuSO_4 ) $ is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of $ Cu=63u $ ) is:
Options:
A) 0.3892 g
B) 0.2938 g
C) 0.2398 g
D) 0.3928 g
Show Answer
Answer:
Correct Answer: B
Solution:
[b] W=Zit where Z = Electrochemical equivalent Eq. wt. of copper $ =\frac{63}{1}=31.5 $ $ Z=\frac{31.5}{96500} $ $ W=Zit=\frac{31.5}{96500}\times 1.5\times 10\times 60=0.2938,g $
