1.

0.85% aqueous solution of NaNO_(3) is apparently 90% dissociated . The osmotic pressure of solution at 300 K is

Answer»

4.674 atm
46.74 atm
2.46 atm
4.674 mm Hg

Solution :Molality, `C=(0.85xx1000)/(100 xx 85)=0.1 "mol L"^(-1)`
`{:(NaNO_(3),rarr,NA^(+),+,NO_(3^(-))),(1-alpha,,alpha,,alpha):}`
`i=(1-alpha+alpha+alpha)/(1)=1+alpha=1+0.90=1.90`
`pi=i"CRT" = 1.90xx0.1xx0.082xx300`
`=4.674` atm


Discussion

No Comment Found

Related InterviewSolutions