Question

200ml of qn aqueous sopution of a protein contains 1.26g of the protein

Answer 1

As we learned in concept

Mathematical Expression for Osmotic Pressure -

\pi =CRT

- wherein

\pi = Representation of osmotic pressure.

C =constant\: in \: moles

R =Gas \: constant= 0.0821\frac{atm.lit}{mol.k}

T=Temp. \: in\: kelvin

Osmotic pressure, \pi\:=\:CRT

2.57\times 10^{-3}=C\times 0.083\times 300

C = 10^{-4}\:mol\:L^{-1}\times 1.0321

\frac{1.26}{M\times 0.2}\:=\:10^{-4}

M = 61038\:g\:mol^{-1}