Which of the following statements is incrrect ?

Options

A. `E _("electrode" )^(Ө)` changes sign whenever we reverse a cell reaction.
B. The half-cell reactions are not reversible.
C. Changing the stoichoimetric coefficients of a half-cell reaction does not affect the value of `E^(Ө)`
D. The more positive the `E^(Ө)` value, the greater the tendency for the substance to be reduced.

Answer

B

Explanation

The half-cell reactions are reversible. Depending upon the conditions, any electrode can act either as an anode or as a cathode.