2. A solution contains non-volatile solute of molecular mass

M_p . Whih of the following can be used to calculate molecular mass of the solute in terms of osmotic pressure (m = Mass of solute, V = Volume of solution and  π  = Osmotic pressure)

a. M_p  = (m/ π ) VRT

b. M_p  = (m/ V ) RT/π

c. M_p  = (m/ V )  π/ RT

d. M_p  = (m/ V )  πRT

Ans. b

Explantion : π = n/V RT ⇒  M_p  = (m/ V ) RT/π

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