Question

what is the relation between osmotic pressure when 1% conc each of glucose urea and sucrose are dissolved in water?????????

Answer 1

Answer:

Molarity is inversely proportional to molecular weight. Molecular weight of glucose=180, urea=60, sucrose=342. Osmotic pressure is also inversely proportional to molecular weight.

Answer 2

Explanation:

We know that the osmostic pressure is given by Π=iMRT

where i is the Van't Hoff factor

M is the molarity

R=0.08206 L-atm mol

−1

K

−1

is the gas constant

T is the absolute temperature

Π∝M

Molarity is inversely proportional to molecular weight.

Molecular weight of glucose=180, urea=60, sucrose=342.

Osmotic pressure is also inversely proportional to molecular weight.

P

1

=Osmotic pressure of glucose (10 g)

P

2

=Osmotic pressure of urea (10 g)

P

3

=Osmotic pressure of sucrose (10 g)

So, P

2

>P

1

>P

3

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