1.

Osmotic pressure of naphthalene solution at 27^@C is 500 mm Hg. When thesolution is diluted and temperature is raised to 47^@C, osmotic pressure of the solutionbecomes 105 mm Hg. The extent of dilution approximately is :-

Answer»

3 TIMES
5 times
7 times
4 times

SOLUTION :`pi_1/pi_2 =(C_1T_1)/(C_2T_2)`
`500/105 = (n_1 /V_1 xx300)/(n_1/V_2 xx 320)`
`500/105=V_2/V_1 xx 300/320`
`500/105xx320/300 =V_2/V_1`
`5 = 320/63=V_2/V_1`


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