Multiple ans type

MULTIPLE ANSWER TYPE

Two isotonic solutions have

(A) the same weight concentrations

(B) the same vapour pressure

(D) All

5 Answers

IT SHOULD BE (B) AND (C)

I THINK FOR (A) SOLUTE SHOULD NOT ASSOCIATE OR DISSOCIATE

simple stuff, answer is (d) [4]

Answer is given as B & C

Even I had the same opinion as Debotosh while solving the prob

But the given ans made me put the qs here

106

Asish Mahapatra ·2009-12-03 05:18:17

For isotonic solutions,
P(a) = P(b) (osmotic pressure)
=> C(a)RT = C(b)RT (assuming temp remains constant)
=> C(a) = C(b)

=> molar concentrations are same

Vapor pressure is directly proportional to concentration (actually mole fraction.) so it is also correct.

But weight concentrations need not be same.

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