question_answer

Amongst the following, the total number of reactions/ processes in which the entropy increases are:

(a) \[2NaHC{{O}_{3}}(s)\xrightarrow{{}}N{{a}_{2}}C{{O}_{3}}(g)+{{H}_{2}}O(g)\]

(b) A liquid cyrstallises into a solid.

(c) Temperature ofcystalline solid is raised from zero K to 100 K.

(d) Hard boiling of an egg.

(e) Devitrification of glass.

(f) Stretching of a rubber band.

(g) Desalination of water.

(h) \[N{{H}_{3}}(g,\,10at,)\xrightarrow{{}}N{{H}_{3}}(g,\,1\,atom)\]

Answer:

4