Which is not true of the standard conditions for electrochemical cell measurements?

Gases are at 1 bar pressure.

Liquids are in the pure state.

Solids are in the pure state.

Solutes are at 1.0 M concentration.

The cell voltage is always positive.

Gases are at 1 bar pressure.

Explanation:

Option a is incorrect. Standard Pressure in chemistry is always taken in atm and not in bar. The standard condition for electro chemical cell measurements are

Gases must be at 1 atm pressure.

Liquids must be in pure state

Solids must also be in pure state

Solutes are at 1.0 M concentration

And the cell voltages are positive.