Osmotic pressure of a urea solution at `10^(@)C` is 500 mm. Osmotic pressure of the solution become 105.3 mm. When it is diluted and temperature raised to `25^(@)C`.The extent of dilution is

Options

A. 6 Times
B. 5 Times
C. 7 Times
D. 4 Times

Answer

B

Explanation

`piV=nRT`
`(500V_(1))/(105.3V_(2))=(nRxx283)/(nRxx298),(V_(1))/(V_(2))=(1)/(5)" so "V_(2)=5V_(1)`