(a) Complete and balance the following reaction
`(i) SO_(2) + H_2S overset("Oxidation")(rarr)`
(ii) `FeCl_3 + H_2O overset("Hydrolysis")(rarr)`
(b) Mention two characteristics of enzyme catalysis
(c) What is the sign of `DeltaS` for the adsorption of gas on solids?

Explanation

(a) (i) `SO_(2) + 2H_S overset("Oxidation")(rarr) 2S + 2H_2O`
(ii) `FeCl_3 + 3H_2O overset("Hydrolysis")(rarr) Fe(OH)_(3) + 3HCl`.
(b) Characteristics are
(i) Highly efficient (ii) Highly specific in nature
OR
Any other revelent Characteristic 
(c) `DeltaS` decreases Or `DeltaS` is negative