Redox Reactions And Electrochemistry Ques 284
Question: A current 2.0 A is passed for 5 hours through a molten metal salt deposits 22 g of metal (At. wt. =177). The oxidation state of the metal in the metal salt is [KCET 1996]
Options:
A) + 1
B) + 2
C) + 3
D) + 4
Show Answer
Answer:
Correct Answer: C
Solution:
$ {E_{metal}}=\frac{Weightof,metal\times 96500}{Number,of,coulombs} $ $ =\frac{22.2\times 96500}{2\times 5\times 60\times 60}=59.5 $ Oxidation number of the metal $ =\frac{177}{59.5}=+,3 $
