Question

A cell is placed in 0.4 M solution of common salt and no change in volume of the cell is seen. What is the concentration of the cell sap?

• A. 0.2 N
• B. 0.4 N
• C. 0.8 N
• D. 0.16 N

Answer 1

The correct option is B 0.4 N

If there is no change in volume of cell then it means that the solution is isotonic i.e., of same concentration to cell sap.

Normality (N) = n X M
where, 'n' is the 'n-factor'
Since common salt has n-factor of 1, N=M
Hence, the concentration of the cell sap is 0.4 N.