Solutions Question 278
Question: A solution of sucrose(molar mass = 342 g/mol) is prepared by dissolving 68.4 g of it per litre of the solution, what is its osmotic pressure (R = 0.082 lit. atm. $ {k^{-1}} $
$ mo{l^{-1}} $ ) at 273k [UPSEAT 2001]
Options:
A) 6.02 atm
B) 4.92 atm
C) 4.04 atm
D) 5.32 atm
Show Answer
Answer:
Correct Answer: B
Solution:
$ \pi =CRT $
$ \pi =\frac{w\times R\times T}{mV}=\frac{68.4\times 0.0821\times 273}{342} $ = 4.92 atm
