Redox Reactions And Electrochemistry Ques 713
Question: A current of 2.0 A when passed for 5 hours through a molten metal salt deposits 22.2 g of metal of atomic weight 177. The oxidation state of the metal in the metal salt is
Options:
A) + 1
B) + 2
C) + 3
D) + 4
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ E_{metal}= $ (Wt of metal $ \times $ 96500)/No of coulombs $ =\frac{(22.2\times 96500)}{(2\times 5\times 60\times 60)}=59.5 $ Oxidation no. of metal $ =\frac{177}{59.5}=+3 $
