(i) 1.51 g of NaCl was dissolved in 500g of water and the elveation in boiling point observed to be 0.0514^(@)C. Calculate the van't . Hoff factor K_(b) for water 0.514 K kg/mol. (ii) 1.1 g of CopCl_(2) 6NH_(3) (mot wt. =267) was dissolved at 100 g"of" H_(2)O. The freezing point of solution is0.29^(@)C. How many moles of solute particies exist in solution for eac mol of soluta introduced ? K_(f) for H_(2)O=1.86^(2) Cm^(-1) (iii) 2g of bezoic acid dissolved in 25g of C_(6)H_(5)^(-). shows a deptession in freezing pont equal to 1.62K. Molal depression constant of benzene is 4.9K mol/kg . What is the percentage association of acid if it dimenzes in solution.

(i) 1.51 g of NaCl was dissolved in 500g of water and the elveation in

1.	(i) 1.51 g of NaCl was dissolved in 500g of water and the elveation in boiling point observed to be 0.0514^(@)C. Calculate the van't . Hoff factor K_(b) for water 0.514 K kg/mol. (ii) 1.1 g of CopCl_(2) 6NH_(3) (mot wt. =267) was dissolved at 100 g"of" H_(2)O. The freezing point of solution is0.29^(@)C. How many moles of solute particies exist in solution for eac mol of soluta introduced ? K_(f) for H_(2)O=1.86^(2) Cm^(-1) (iii) 2g of bezoic acid dissolved in 25g of C_(6)H_(5)^(-). shows a deptession in freezing pont equal to 1.62K. Molal depression constant of benzene is 4.9K mol/kg . What is the percentage association of acid if it dimenzes in solution.
Answer» SOLUTION :(i) `1.937` (II) `~~_(^^)` `(III) 99.2%`