Solutions Question 292
Question: Osmotic pressure of a urea solution at $ 10^{o}C $ is $ 500mm. $ Osmotic pressure of the solution become 105.3 mm. When it is diluted and temperature raised to $ 25^{o}C. $ The extent of dilution is [MP PET 2004]
Options:
A) 6 Times
B) 5 Times
C) 7 Times
D) 4 Times
Show Answer
Answer:
Correct Answer: B
Solution:
$ \pi V=n,RT $
$ \frac{500V_1}{105.3V_2}=\frac{nR\times 283}{nR\times 298} $ ; $ \frac{V_1}{V_2}=\frac{1}{5} $ so $ V_2=5V_1 $
