The freezing point of ether was lowered by `0.60^(@)C`on dissolving `2.0g` of phenol in `100g` of ether. Calculate the molar mass of phenol and comment on the result. Given: `K_(f)` (ether)` = 5.12 K kg mol^(-1)`.

Freezing point of ether was lowered by 0.6^(@)C on dissolving 2.0g of phenol ( C_(6)H_(5)OH , mol. wt. 94) in 100 g of ether. The molal depression constant for ether is 5.12^(@) . Calculate the molecular mass of phenol in solution and comment on your result.

Phenol associates in benzene to from dimer (C_(6)H_(5)OH)_(2) . The freezing point of a solution containing 5g of phenol in 250 g of benzene is lowered by 0.70^(@)C . Calculate the degree of association of phenol in benzene .( k_(f) for benzene = 5.12 Km^(-1) )

The elevation in boiling point of a solution containing 0.20g of solute in 20g of ether is 0.17^@C , K_b for ether is 2.16 K kg/mol. Calculate the molar mass of solute.

(a) A solution containing 0.5g of naphithalene in 50g C Cl_(4) yield a boiling point elevation of 0.4K , while a solution of 0.6g of an unknown solute in the same mass of the solvent gives a boiling point elevation of 0.65K . Find the molar mass of the unknown solute. (b) The boiling point of a solution of 0.1g of a substance in 16g of ether was found to be 0.100^(@)C higher that of pure ether. What is the molecular mass of the substance. K_(b) (ether) =2.16K kg "mol"^(-1)

(a) A solution containing 0.5g of naphithalene in 50g C Cl_(4) yield a boiling point elevation of 0.4K , while a solution of 0.6g of an unknown solute in the same mass of the solvent gives a boiling point elevation of 0.65K . Find the molar mass of the unknown solute. (b) The boiling point of a solution of 0.1g of a substance in 16g of ether was found to be 0.100^(@)C higher that of pure ether. What is the molecular mass of the substance. K_(b) (ether) =2.16K kg "mol"^(-1)

Phenol associates in benzene to a certain extent to form a dimer. A solution containing 20 g of phenol in 1.0 kg of benzene has its freezing point lowered by 0.69 K. Calculate the fraction of phenol that has dimerised. [Given : K_(f) for benzene = 5.1 Km^(-1)]

1.00g of non - electrolyte dissolved in 100 g of CS_(2) , the freezing point lowered by 0.40 K. Find the molar mass of the solute . ( k_(f) for CS_(2) = 5.12 K kg mol^(-1) ).

Calculate the freezing point of solution prepared by dissolving 4.5 g of glucose (molar mass = 180 g mol^(-1)) in 250 g of bromoform. Given, freezing point of bromoform = 7.8^@C and K_f for bromoform = 14.4 K kg mol^(-1) .

0.440 g of a substance dissolved in 22.2 g of benzene lowered the freezing point of benzene by 0.567 ^(@)C . The molecular mass of the substance is _____ (K_(f) = 5.12 K kg mol ^(-1))