Redox Reactions And Electrochemistry Ques 739
Question: The same quantity of electricity was passed through two electrolytic cells containing a salt of metal X and zinc sulphate solution respectively using platinum electrode. 0.468 g of metal X and 1.532 g of Zn were deposited. The equivalent mass of X is (At. wt. of Zn is 65.4 u)
Options:
A) 9.98 g/equiv
B) 3.2 g/equiv
C) 5.9 g/equiv
D) 0.99 g/equiv
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Gram equivalent of metal $ =geq. $ of Zn $ \frac{0.468}{E_{M}}=\frac{1.532}{E_{Zn}} $
$ \Rightarrow $ $ \frac{0.468}{E_{M}}=\frac{1.532\times 2}{65.4} $ $ [ \because E_{Zn}=\frac{65.4}{2} ] $ $ E_{M}=9.98,g/eq $
