Predict the sign of the entropy change for each of the following processes and give your...

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Chemistry

Predict the sign of the entropy change for each of the followingprocesses and give your reasoning why:
1. Solid sugar is added to water to form a solution.
2. Iodine vapor condenses on a cold surface to formcrystals.
3. N₂(g) + 3H₂ (g) 2NH₃(g)
4. H₂O(l) H₂O(g)
5. CaCO₃(s) CaO(s) +CO₂(g)
6. NH₄NO₃(s) +H₂O(l) NH₄⁺ (aq)+ NO₃^- (aq)
7. freezing of water Â Â
8. boiling of water
9. crystallization of salt from a supersaturated solution
10. the reaction 2 NO(g) â†’ N2O2(g)
11. the reaction 2 H2(g) + O2(g) â†’ 2 H2O(g)
12. Fe(s) â†’ Fe(l) Â Â
13. 2 Fe(s) + 3/2 O2(g) â†’ Fe2O3(s) Â Â
14. HF(l) â†’ HF(g)
15. 2 H2O2(l) â†’ 2 H2O(l) + O2(g)
16. H2O(l) -> 2 H2(g) + O2(g)
17. CO_(g) + 3 H_2(g)-> CH_4(g)+ H₂O_(g)
18. 2 NaHCO_3(s) --->Na₂CO_3(s) + H₂O_(g) +CO_2(g)
19. CO(g) + H₂O(g) ----> CO₂(g) +H₂(g)
20. CaCO₃(s) ----> CaO(s) + CO₂(g)
21. 2NH₃(g) + CO₂(g) ---->NH₂CONH₂(aq) + H₂O(l)
22. 2Na₂O₂(s) + 2H₂O(l) --->4NaOH(aq) + O₂(g)
23. C₂H₅OH(l) + 3O₂(g) --->2CO₂(g) + 3H₂O(g)
Plz let me know how you did it.
Simple description is the best
Thanks

Answer & Explanation Solved by verified expert

3.7 Ratings (438 Votes)

1 Solid sugar is added to water to form a solution positive dissolution increases randomness 2 Iodine vapor condenses on a cold surface to form crystals negative vapour to liquid randomness decreases so entropy decreases 3 N2g 3H2 g 2 NH3g See Answer

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