Exercise | Q 3.6 | Page 46
Answer the following.
How molar mass of a solute is determined by osmotic pressure measurement?
Solution
1. For very dilute solutions, the osmotic pressure follows the equation,
....(1)
2. If the mass of solute in V litres of a solution is W2 and its molar mass is
, then
Substituting the value of n2 in equation (1), we get
∴
This formula can be used for the calculation of molar mass of a nonionic solute (i.e., nonelectrolyte), by osmotic pressure measurement.
1. For very dilute solutions, the osmotic pressure follows the equation,
2. If the mass of solute in V litres of a solution is W2 and its molar mass is
Substituting the value of n2 in equation (1), we get
∴
This formula can be used for the calculation of molar mass of a nonionic solute (i.e., nonelectrolyte), by osmotic pressure measurement.