Redox Reactions And Electrochemistry Ques 97
Question: What amount of Cl2 gas liberated at anode, if 1 amp. current is passed for 30 min. from NaCl solution. [BHU 2005]
Options:
A) 0.66 moles
B) 0.33 moles
C) 0.66 g
D) 0.33 g
Show Answer
Answer:
Correct Answer: C
Solution:
The reaction taking place at anode is $2Cl^- \rightarrow Cl_2 $ + 2e- 1 mole 2 96500 coulomb
Q = i . t = 1 30 60 = 1800 coulomb.
The amount of chlorine liberated by passing 1800 coulomb of electric charge $ =\frac{1\times 1800\times 71}{2\times 96500}=0.66g $ .
