Question

An aqueous solution of sucrose, C₁₂H₂₂O₁₁, containing 34.2 g// has an osmotic pressure of 2.38 atmospheres at 17°C. For an aqueous solution of glucose, C₆H₁₂O₆ to be isotonic with this solution, it would have 

(a) 34.2 g/lit 

(b) 17.1 g/lit 

(c) 18.0 g/lit 

(d) 36.0 g/lit of glucose

Answer 1

Correct option: (c) 18.0 g/lit

Explanation:

For isotonic solutions π₁ = π₂ or c₁ = c₂ ;

Hence 18 gL^-1 glucose is 0 . 1 M .