Question

The emf of the concentration cell without transference can be expressed by

Answer 1

Explanation:

For the purpose of understanding first we have to consider two simple cells.

Pt,,/,Ag

Pt,,/,Ag

1)Here the two electrolytes are not in contact with each other.

2)Activity of ions in the two solutions be and .

3)The cells are comes together in a way that they oppose each other.

so we have to consider the cell

Pt,,/,Ag

Cell reactions:

1) +↔+

2) +↔+

Then the expression for emf is

=ln

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