The osmotic pressure of equimolar solutions of glucose, sodium chloride and barium chloride will be in the order :

Options

A. `BaCl_(2) gt NaCl gt ` glucose
B. `BaCl_(2) gt` glucose `gt` NaCl
C. Glucose `gt BaCl_(2) gt NaCl`
D. `NaCl gt BaCl_(2) gt` glucose

Answer

A

Explanation

Osmotic pressure depends upon the number of particles given by solute. Glucose remains undissociated, sodium chloride gives `(Na^(+)+Cl^(-))^(2)` mole particles per mole and barium chloride gives `(Ba^(2+), 2Cl^(-))`3 mole particles pre mole. Therefore, correct order is A.