Subject Category > General Knowledge

Q. The reduction potential of hydrogen half-cell will be negative if :(1) PH2= 2 atm and [H+] = 2.0 M(2) PH2= 1 atm and [H+] = 2.0 M(3) PH2= 1 atm and [H+] = 1.0 M(4) PH2= 2 atm and [H+] = 1.0 M

A) Option 2

B) Option 1

C) Option 4

D) Option 3

✔ Option 4

Additional Information > Exam point of View

The reduction potential of a hydrogen half-cell becomes negative if the hydrogen ion concentration decreases or the pressure of H2 gas increases. This is dictated by the Nernst equation.

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