Redox Reactions And Electrochemistry Question 123
Question: What is the amount of chlorine evolved when 2 amperes of current is passed for 30 minutes in an aqueous solution of $ NaCl $ [BHU 1998; AIIMS 1999]
Options:
A) 66 g
B) 1.32 g
C) 33 g
D) 99 g
Show Answer
Answer:
Correct Answer: B
Solution:
At Andoe $ AtAnode,C{l^{-}}\to \frac{1}{2}Cl_2+{e^{-}} $ $ {E_{Cl_2}}=\frac{35.5\times 2}{2}=35.5 $ $ {W_{Cl_2}}=\frac{{E_{Cl_2}}\times I\times t}{96500} $ $ =\frac{35.5\times 2\times 30\times 60}{96500}=1.32gm $ .
BETA
