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Q 3087134087.     Predict in which of the following, entropy increases/decreases :
(i) A liquid crystallizes into a solid.
(ii) Temperature of a crystalline solid is raised from 0 K to 115 K.
(iii) `2NaHCO_3 (s) → Na_2 CO_3 (s) + CO_2 (g) + H_2O (g)`
(iv) `H_2(g) → 2H (g)`
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)