Substances with well defined properties are converted
by chemical reactions into other substances with
different properties For any chemical reaction, chemists
try to find out
(a) the feasibility of a chemical reaction which can be
predicted by thermodynamics ( as you know that a
reaction with DG < 0, at constant temperature and
pressure is feasible);
(b) extent to which a reaction will proceed can be
determined from chemical equilibrium;
(c) speed of a reaction i e time taken by a reaction to
reach equilibrium