The breaking up or splitting of a compound by heat into simpler substances which do not recombine on cooling to give the original substance is known as:

In which of the following reversible reactions will a change in pressure have no effect on the equilibrium position?

__ is one which allows exchange of materials between the system and the surroundings, gaseous substances will escape and hence equilibrium will never be attained.

Examples of reversible reactions include the following except:

__ a French chemist, put forward a principle which explains the behavior of the equilibrium position of a chemical system upon changes in the above factors.