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 $ .



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