Sugar moiety in DNA and RNA molecules respectively are

Given below are two statements :

Statement I : Phenols are weakly acidic.

Statement II : Therefore they are freely soluble in NaOH solution and are weaker acids than alcohols and water.

Choose the most appropriate option :

17.0 g of NH₃ completely vapourises at $$-$$33.42$$^\circ$$C and 1 bar pressure and the enthalpy change in the process is 23.4 kJ mol^$$-$$1. The enthalpy change for the vapourisation of 85 g of NH₃ under the same conditions is _________ kJ.

1.2 mL of acetic acid is dissolved in water to make 2.0 L of solution. The depression in freezing point observed for this strength of acid is 0.0198$$^\circ$$C. The percentage of dissociation of the acid is ___________. (Nearest integer)

[Given : Density of acetic acid is 1.02 g mL^$$-$$1, Molar mass of acetic acid is 60 g mol^$$-$$1, K_f(H₂O) = 1.85 K kg mol^$$-$$1]