\({P_T}\, = {\chi _A}P_A^o + {\chi _B}P_B^o\, = 0.4\, \times \,7\, \times \,{10^3}\, + \,0.6\, \times \,12\, \times \,{10^3}\, = \,{10^4}\)
\(0.4\, \times \,7\, \times \,{10^3}\, = \,{Y_A}\, \times \,{10^4}\)
\({Y_A}\, = \,0.28\)
\({Y_B}\, = \,1 - 0.28\, = 0.72\)
$\left[\right.$ આપેલ છે $\left.: {K}_{{f}}\left({H}_{2} {O}\right)=1.86\, {~K}\, {~kg}\, {~mol}^{-1}\right]$
$(K_f =-1.86\,^o\, C/m)$