1.22 g of benzoic acid is dissolved in 100 g of acetone and 100 g of acetone seperately. Boiling point of the solution in acetone increases by `0.17^(@)` C, while that of solution, in benzene increases by `0.13^(@)` C , `K_(b)` for acetone and benzene is 1.7 K kg `mol^(-1)` and 2.6 K kg `mol^(-1)`. Find molecular weight of benzoic acid in two cases. Hence, find their sum.

1.22 g of benzoic acid is dissolved in acetone and benzene separately. Boiling point of mixture with acetone increase by 0.17^(@)C and boiling point of mixture with benzene increases by 0.13^(@)C . K_(b) ("acetone")=1.7 K kg "mol"^(-1) , Mass of acetone = 100 g , K_(b) ("benzene")=2.6 k Kg mol^(-1) , Mass of benzene = 100 g , Find molecular weight of benzoic acid in acetone and in benzene solution. Justify your answer with structure.

A solute containing 0.564g of solute in 36.8g of acetone boils at 56.46^(@)C . Calculate the molar mass of solute if the boiling point of acetone is 56.30^(@)C . [ K_(b) for acetone 1.92K kg. mol^(-1) ]

On dissolving 3.24 g of sulphur in 40 g of benzene,the boiling point of the solution was higher than that of benzene by 0.81K .What is the molecular formula of sulphur? ( K_(b) for benzene = 2.53 K kg mol^(-1) , atomic mass of sulphur = 32 g mol^(-1) ).

1.5 g of a non-volatile, non-electrolyte is dissolved in 50 g benzene ( K_b = 2.5 kg mol^(-1) ). The elevation of the boiling point of the solution is 0.75 K. The molecular weight of the solute in g mol^(-1) is :

1.250 g of naphthalene was dissolved in 60 cm3 of benzene and freezing point of the solution was found to be 277.515 K while that of benzene 278.495 K. Density of benzene is 0.880 g cm^(-3) Kf = 5.1 K mol^(-1) kg. Calculate the molecular weight of naphthalene.

The boiling point of a solution containing 1.5 g of dichlorobenzene in 100 g of benzene was higher by 0.268^@C . Calculate the molar mass of dichlorobenzene. K_b forbenzene = 2.42 K kg mol^-1

1.22 g of benzoic acid is dissolved in (i) 100g acetone (K_(b) for acetone =1.7) and (ii) 100 g benzene (K_(b) for benzene = 2.6) . The elevation in boiling points T_(b) is 0.17^(@)C and 0.13^(@)C respectively. (a) What are the molecular weights of benzoic acid in both the solutions? (b) What do you deduce out of it in terms of structure of benzoic acid?

Dissolution of 10g solute in 100g benzene increases its boiling point by 1^@ C. calculate molecular mass of solute. (k_b = 2.35K Kg mol^(-1) )