Can you help me?

Question

Without using absolute entropy values, predict the sign of (the change in S degrees) for each of the following processes.
(a) NaClO3(s) ~> Na+(aq) + ClO3-(aq)
-positive
-negative
(b) NH3(g) + HBr(g) ~> NH4Br(s)
-positive
-negative
(c) H2S(g) + 1/2 O2(g) ~> 1/8 S8(s) + H2O(g)
-positive
-negative

Answer 1

a positve
b negative
b negative

Answer 2

Dr A is of course correct, but you might want to know why.

Entropy means disorder, and spreading things out counts as a very important kind of disorder. So if you increase the number of separate particles (e.g. ions, or gas molecules) that can move around freely, that increases entropy.