Write any three differences between Physisorption and Chemisorption.

Examine the given defective crystal:

Answer the following questions:

(i) Is the above defect stoichiometric or non-stoichiometric?

(ii) Write the term used for this type of defect. Give an example of the compound which shows this type of defect.

(iii) How does this defect affect the density of the crystal?

Conductivity of 2.5 × 10^-4 M methanoic acid is 5.25 × 10^-5 S cm^-1.

Calculate its molar conductivity and degree of dissociation.

Given:

λ_(H⁺₎ = 349.5S cm²mole^-1 and λ_(HCOO^-₎ = 50.5 Scm²mol^-1

Give reasons for the following:

(i) Phenol is more acidic than methanol

(ii) The C – O – H bond angle in alcohols is slightly less than the tetrahedral angle (109⁰28’).

(iii) (CH₃)₃C – O – CH₃ on reaction with HI gives (CH₃)₃ C – I and CH₃ – OH as the main products and not (CH3)₃C – OH and CH₃ – I.

Predict the products of the following reactions :

(i)

(ii)

(iii)