Predict the sign of entropy change in the following reaction : (i) O_(2)(g) +2SO_(2)(g) rarr2SO_(3)(g) (ii)CaC_(2)O_(4)(s) rarr CaCO_(3)(s)+CO(g) (iii) 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(g)

Predict the sign of entropy change in the following reaction : (i) O_

1.	Predict the sign of entropy change in the following reaction : (i) O_(2)(g) +2SO_(2)(g) rarr2SO_(3)(g) (ii)CaC_(2)O_(4)(s) rarr CaCO_(3)(s)+CO(g) (iii) 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(g)
Answer» Solution :(i) `DELTAS=- IVE` ( because number of decreases ) (II) `DeltaS= + ive`( because reactant is SOLID while one of the productis GASEOUS ) (iii) `DeltaS = -ive` ( because number of molesdecreases )