Question

Homogeneous reactions
(a) are those in which all reactants, products and catalyst are in different physical state.
(b) are those in which all reactants and products are in different physical state.
(c) are those in which all reactants and products are in same physical state.
(d) are those in which all reactants, products and catalyst are in same physical state.

Answer 1

Answer:

types of catalysis - Chemguide

In a heterogeneous reaction, the catalyst is in a different phase from the reactants. In a homogeneous reaction, the catalyst is in the same phase as the reactants. What is a phase? If you look at a mixture and can see a boundary between two of the components, those substances are in different phases.

Answer 2

(c) are those in which all reactants and products are in same physical state.