Question

The ratio of osmotic pressure exerted by 1 M sucrose and 1 M $NaCl$ solution will be

• A. 1
• B. 2
• C. 0.1
• D. 0.5

Answer 1

The correct option is D 0.5

• The osmotic pressure depends on the concentration of solute molecules in the solution.
• A molecule of sodium chloride will break up into two ions of sodium and chloride after dissolving in water.
• While a molecule of sucrose will not break up into separate ions.
• Since the no. of solutes will be double in the case of $NaCl$ solution then the solution of sucrose, the ratio of osmotic pressure exerted by the solution of an equal concentration of sucrose and sodium chloride will be 1:2, i.e. - 0.5.

So, the correct answer is 'option D'.