Question

Define the following terms:
(i) Catalyst
(ii) Adsorption

Answer 1

Catalyst – a substance that increases the rate of a reaction without modifying the overall standard Gibbs energy change in the reaction; the process is called catalysis.
Adsorption – anincrease in the concentration of a dissolved substance at the interface of a condensed and a liquid phase due to the operation of surface forces. Adsorption can also occur at the interface of a condensed and a gaseous phase.