Home
Class 12
CHEMISTRY
75.2 g of C(6)H(5)OH (phenol) is dissolv...

`75.2 g` of `C_(6)H_(5)OH` (phenol) is dissolved in a solvent of `K_(f) = 14`. If the depression in freezing point is `7K`, then find the percentage of phenol that dimerises.

Text Solution

Verified by Experts

`2C_(6)H_(5)OH(C_(6)H_(5)OH)_(2)`
`C-Calpha" "(Calpha)/2`
`7=14xx0.8((2-alpha)/2)`
`apha=0.75=75%`
Promotional Banner

Similar Questions

Explore conceptually related problems

In an experiment, 72.5 g of C_(6)H_(5)OH (phenol) is dissolved in a solvent of K_(f)=14 . If the depression in freezing point is 7 K , find the percentage of phenol that dimerizes.

75.2 g of C_(6)H_(5)OH (phenol) is dissolved in 1 kg of solvent of k_(f)= 14 K "molality"^(-1) . If depression in freezing point is 7 K . Calculate % of phenol that dimerises.

1575.2 g of C_(6)H_(5)OH (phenol) is dissolved in 960 g of a solvent of solvent of K_(f)=14 K kg mol^(-1) . If the depression in freezing point is 7 K , then find the percentage of phenol that dimerizes.

72.5g of phenol is dissolved in 1 kg of a solvent (K_(f)=14) which leads to dimerization of phenol and freezinfg point is lowered by 7 kelvin. What percentage of toal phenol is present in dimeric form?

72.5g of phenol is dissolved in 1kg of a solvent (k_(f) = 14) which leads to dimerization of phenol and freezing point is lowered by 7 kelvin. What percent of total phenol is present in dimeric form?

Molecules of benzoic acid (C_(6)H_(5)COOH) dimerise in benzene. ‘w’ g of the acid dissolved in 30g of benzene shows a depression in freezing point equal to 2K. If the percentage association of the acid to form dimer in the solution is 80, then w is : (Given that K_(f)=5K Kg "mol"^(-1) Molar mass of benzoic acid =122 g "mol"^(-1) )

A hypothetical solute AB is 50% dissociated at freezing point and 80% dissociated at boiling point of solution.If 2 mole of solute is dissolved in 500 g solvent and the difference in boiling point and freezing point of solvent is 100K then calculate the difference in boiling point and freezing point of solution. [Given K_(b)= 0.5Kkgmol^(-1) K_(f)=2.0Kkgmol^(-1) ]