What are the signs of the entropy change `( +` or `-)` in the following`:`
`I.` A liquird crystallisation in to solid
`II.` Temperature of crystallises in to solid.
`III.` `2 NaHCO_(3)(s) rarr Na_(2)CO_(3)(s)+CO_(2)(g)+H_(2)O(g)`
`IV.` `H_(2)(g) rarr 2H(g)`

What are the signs of the entropy change ( + or -) in the following : I. A liquird crystallisation in to solid II. Temperature of solid raised from 0 to 115K III. 2 NaHCO_(3)(s) rarr Na_(2)CO_(3)(s)+CO_(2)(g)+H_(2)O(g) IV. H_(2)(g) rarr 2H(g)

What are the sign of the entropy change (+ or -) in the following: I : A liquid crystallises into a solid II: Temperature of a crystalline solid is raised from 0K to 115K III: 2NaHCO_(3(g)) rarr Na_(2)CO_(3(g)) + CO_(2(g)) + H_(2)O_((g)) IV : H_(2(g)) rarr 2H_((g))

Predict the entropy change (positive/negative) in the following: i) A liquid substance crystallizes into a solid. ii) Temperature of a crystal is increased. iii) 'CaCO_3(s) rarr CaO(s) rarr O_2(g)' iv) 'N_2(g)(1 atm) rarr N_2(g)(0.5 atm)'

Predict in which of the following entropy of the system increses // decreases: (P) A liquid crystalizes into a solid (Q) Temperature of a crystalline solid is raised (R ) 2NaHCO_(3)(s)toNa_(2)CO_(3)(s)+H_(2)O(g)+CO_(2)(g) (S) H_(2)(g)to2H(g)

Predict in which of the following , entropy increases or decreases . (i) A liquid crystallizes into a solid (ii)Temperature of a crystallized solid is raised from 0 K to 115 K (iii) 2NaHCO_(3(s)) to Na_2CO_(3(s)) + CO_(2(g)) + H_2O_((g)) (iv) H_(2(g)) to 2H_((g))

Predict in which of the following reactions, entropy increases/decreases 2NaHCO_(3) rarr Na_(2)CO_(3)(s) + CO_(2)(g) + H_(2)O(g)

Percentage loss in mass, when NaHCO_(3)(s) is heated in open vessel 2NaHCO_(3)(s)rarrNa_(2)CO_(3)(s)+CO_(2)(g)+H_(2)O(g)