Which are heterogenous equilibrium ?
(i)`H_2O_((l)) hArr H_2O_((g))`
(ii)`Ca(OH)_(2(s)) + aq hArr Ca_((aq))^(2+) + 2OH_((aq))^(-)`
(iii)`CaCO_(3(s)) hArr CaO_((s)) + CO_(2(g))`
(iv)`CH_3COOC_2H_(5(l)) + H_2O_((l)) hArr CH_3COOH_((l)) + C_2H_5OH_((l))`
(v)`Fe_((aq))^(3+) + SCN_((aq))^(-) hArr [Fe(SCN)]_((aq))^(2+)`

Explanation

(i), (ii) and (iii) are heterogenous equilibrium but (iv) and (v) are homogenous equilibrium.