The osmotic pressure of a dilute solution increases when

Options

A. more of solute is added
B. more of solvent is added
C. temperature is increased
D. any one of the change is made

Answer

B

Explanation

The general osmotic pressure equation is `piv=nkT`, where `pi` is osmotic pressure, v the volume of the solution, n the number of moles of solute, k is equal to R, the gas constant and T is absolute temperature . From the equation, `pi=(nkT)/v`, it follows that decreases in T or increase in v (by adding more solvent ) will cause osmotic pressure to decrease. Addition of solute will increase n causing osmotic pressure to increase.