Chemistry - Liquid Solution Question with Solution | TestHub

Let mass of solution be 100 g

Volume of solution$=\frac{\mathrm{M}\mathrm{a}\mathrm{s}\mathrm{s}}{\mathrm{D}\mathrm{e}\mathrm{n}\mathrm{s}\mathrm{i}\mathrm{t}\mathrm{y}}=\frac{100}{1.04}$

$=96.154\text{ mL}=0.096\text{ L}$

${\mathrm{w}}_{\mathrm{B}}=3.5\text{ g}$

${\mathrm{M}}_{\mathrm{B}}=58.5\text{ g mo}{\text{l}}^{-1}$(molar mass of NaCl)

For complete ionisation of NaCl, van't Hoff factor will be '2'.

i = 2

we know,

$\mathrm{\pi }=\mathrm{i}\mathrm{C}\mathrm{R}\mathrm{T}=\mathrm{i}\frac{\mathrm{n}}{\mathrm{V}}\mathrm{R}\mathrm{T}$

$=2\times \frac{3.5\times 0.0821\times 293}{58.5\times 0.096}=29.98\text{ atm}$