Redox Reactions And Electrochemistry Ques 618

Question: 1.0 L each of a buffer containing 1 mole $ NH_3 $ and 1 mol of $ NH_4^{+} $ were placed in the cathodic and anodic half-cells and 965 C of electricity was passed. If anodic and cathodic half cells reactions involve oxidation and reduction of water only as

$ 2H_2O\xrightarrow{{}}4{H^{+}}+O_2-4{e^{-}}; $ $ 2H_2O+2{e^{-}}\xrightarrow{{}}H_2+2O{H^{-}} $ Then pH of

Options:

A) cathodic solution will increase

B) anodic solution will decrease

C) both the solutions will remain practically constant

D) both the solutions will increase

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Due to buffer action the pH will remain practically constant,



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