Define 'Homogeneous Equlibria and Heterogeneous Equilibria'. Give two examples of each of them.

Explanation

(i) Homogeneous equlibrium When all reactants and products are in sane phase present
`H_(2)(g)+Cl_(2)(g)harr2HCl(g) : K_(c)=([HC]^(2))/([H_(2)][Cl_(2)])`
`SO_(2)(g)+NO_(2)(g)harrSO_(2)(g)+NO(g) : K_(c)=([SO_(3)][NO])/([SO_(2)][NO_(2)])`
(ii) Heterogeneous equlibriun When more than one phase present
`3Fe(S)+4H_(2)(g): ([H_(2)]^(4))/([H_(2)O]^(4))`
`2Na_(2)O_(2)(S)+2H_(2)O(l)harr4NaOH(l)+O_(2)(g), K_(c)=[O_(2)`