Question

A solution containing 18g of non-volatile ,non- electrolyte is dissolved in 200g of water freezes at 272.07k calculate molecular mass of solute

Answer 1

Explanation:

M

2

=

ΔT

f

×W

1

1000×K

f

×W

2

M 2 = (273−272.07)×200

1000×1.86×18

M 2=180 g/mol

b)

Isotonic solutions: Two or more solutions exerting the same osmotic pressure are called isotonic solutions. 0.05 M urea solution is isotonic with 0.05 M sucrose solution as both have the same osmotic pressure.

When the blood cell is dipped in a solution containing more than normal saline concentration, it loses water due to osmosis and collapses.