2g of benzoic acid `(C_6H_5COOH)` dissolved in 25 g of benzene shows a depression in freezing point equal to 1.62 K. Molal depression constant for benzene is `4.9 k kg mol^-1`. What is the percentage association of acid if it forms dimer in solution ?

1.00 g of a non-electrolyte dissolved in 50.5g of benzene lowered its freezing point by 0.40K. The freezing point depression constant of benzene is "5.12K.kg mol"^(-1) . Find the molecular mass of the solute.

When 20 g of naphthoic acid (C_11H_8O_2) is dissolved in 50 g of benzene , a freezing point depression of 2K is observed. The vant Hoff factor (i) is [ K_f="1.72 K kg mol"^(-1) ]

2.00 g of non=electrolyte solute dissolved in 100 g of benzene lowered the freezing point of benzene by 0.50K. The freezing point depression constant of benzene is 5.12 K kg mol^(-1) . Find out the relative molar mass of the solute.

19.5 g of CH_2FCOOH is dissolved in 500 gm water. The depression in freezing point in 1^@C . Calculat the vant factor and dissociation constant of fluroacetic acid.

A solution of 1.25 g of 'P' in 50g of water lowers freezing point by 0.3^@C . Molar mass of 'P' is 94. K_f(water) is 1.86 K kg mol^(-1). The degree of association of 'P' in water is [Assume dimerisation of P]

KBr is 80% dissociated in aqueous solution. The freezing point of a 0.5 molal solution is K_f =1.86 K kg mol^-1

0.6 mL of acetic acid (CH_3COOH) , having density 1.06g mL^-1 , is dissolved in 1 litre of water. The depression in freezing point observed for this strength of acid was 0.0205^@C . Calculate the van't Hoff factor and the dissociation constant of acid

0.900g of a solute was dissolved in 100 ml of benzene at 25^(@)C when its density is 0.879 g/ml. This solution boiled 0.250^(@)C higher than the boiling point of benzene. Molal elevation constant for benzene is "2.52 K.Kg.mol"^(-1) . Calculate the molecular weight of the solute.

Calculate the depression of freezing point of 0.1 (M) aqueous soln. of an weak acid for 20% dissociation given Kf = 1.86 k//hg mol^-1 .

The fraction of phenol dimerised in benzene if 20 g of phenol in 1 kg benzene exhibits a freezing point depression of 0.69 K. ( K_f benzene) =5.12 kkg/mol),(MW of phenol=94)