If aqueous solution contains 9 \% and 1 \% (w/w ) of two non-volatile non-electrolytes X (molecular weight 180) and Y (molecular weight 50 ) respectively, the boiling point of solution in ^ C approxi…

Question

If aqueous solution contains 9 \% and 1 \% (w/w ) of two non-volatile non-electrolytes X (molecular weight 180) and Y (molecular weight 50 ) respectively, the boiling point of solution in ^ C approximately is (K_b=0.52 K kg mol^-1)

Accepted Answer

Correct answer: B. (b) Moles of non-volatile solute X=9/180 Moles of non-volatile solute Y=1/50 Mass of solvent water (approx.) =90 gm K_b=0.52 Kkg mol^-1 T_b=K_b m =0.52( 9180+ 150) 100090 =0.52 (0.05+0.02 )10=0.40 Thus, boiling point =100+0.40=100.4^ C

$If aqueous solution contains 9 % and 1 % (w / w) of two non-volatile non-electrolytes X (molecular weight 180) and Y (molecular weight 50) respectively, the boiling point of solution in^{\circ} C approximately is (K_{b} = 0.52 K kg mol^{- 1})$

Solution

More Solutions PYQs