Redox Reactions And Electrochemistry Ques 728
Question: 3F of electricity passes through three electrolytic cells connected in series containing $ A{g^{+}},C{a^{2+}} $ and $ A{l^{3+}} $ ions, respectively. The molar ratio in which the three metal ions are liberated at the electrodes is
Options:
A) 1 : 2 : 3
B) 2 : 3 : 1
C) 6 : 3 : 2
D) 3 : 4 : 2
Show Answer
Answer:
Correct Answer: C
Solution:
[c] 1 Eq of $ A{g^{+}}:1 $ Eq of $ C{a^{2+}}:1 $ Eq of $ A{l^{3+}} $ 1 mol of $ A{g^{2+}};\frac{1}{2} $ mol of $ C{a^{2+}};\frac{1}{3} $ mol of $ A{l^{3+}} $
$ \therefore $ mole ratio is $ 1:\frac{1}{2}:\frac{1}{3}=6:3:2 $
