Give definition with example: (i) integral heat of solution (ii) heat of dilution.

Given that : (i) heat of formation of water = -68.3 kcal (ii) heat of combustion of acetylene = - 310.6 kcal (iii) heat of combustion of ethylene = - 337.2 kcal. Calculate the heat of reaction for the hydrogenation of acetylene at constant volume (25^(@)C) .

(i) State annd explain with example the Hess's law of constant heat summation. (ii) Show that Hess's law is simply a corollary of first law of thermodynamics.

Define: (i) Heat of combustion, (ii) Heat of formation, (iii) Heat of neutralisation.

Give definition: (i) critical pressure (ii) critical volume of a gas.

(i) Show that heat of reaction at constant volume is equal to the change in internal energy of the system. (ii) Show that heat of reaction at constant pressure is equal to the change in enthalpy of the system.

Write ostwald dilution law 1 what is buffer solution? State with example, the activity of an acidic buffer- solution.

Give an example of: (i) alkylidene dihalide or gemdihalide.

Give definition: (i) closed system (ii) adiabatic system (iii) open system (iv) isolated system.

What will happen if boron is heated with KOH solution.