Question

108. Which solution will exert highest osmotic pressure?
(1) 1M glucose solution. (2) 1M urea solution
(3) 1M Alum solution. (4) 1M NaCl solution​

Answer 1

Answer:

Explanation:

osmotic pressure directly proportional to no. of solute particles

here we have more solute particles in alum solution

so alum solution has highest osmotic pressure

Answer 2

1M Alum solution will exert highest osmotic pressure.

Explanation:

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

where,

$\pi$ = osmotic pressure of the solution

i = Van't hoff factor = 1 (for non-electrolytes)

R = Gas constant

T = temperature of the solution

As 1 M alum (which is double salt of a element with aluminium sulphate ) will produce most number of ions and thus generate highest osmotic pressure.

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