Crystallization of a pure compound is spontaneous only below 96.°C.

This reaction is spontaneous except below −22.°C but proceeds at a slower rate below 165.°C.

This reaction is spontaneous only above 51.°C but proceeds at a slower rate below 84.°C. △His △Sis B This reaction is spontaneous only below 128.°C. △His △Sis C This reaction is endothermic and proceeds faster at temperatures above 19.°C.

Which of the following can be obtained by the process of crystallization, when a solution is left undisturbed for a long period of time and then allowed to evaporate to obtain pure crystals?1 pointa. Pure iron oxide (rust)b. Pure glasswarec. Crude table saltd. Crushed coffee powder

At which temperature would a reaction with H = -92 kJ/mol, S = -0.199 kJ/(molK) be spontaneous?A.400 KB.500 KC.600 KD.700 KSUBMITarrow_backPREVIOUS

A certain inorganic compound (A) on heating loses its water of crystallization. On further heating, a blackish brown powder (B) and two oxides of sulphur (C and D) are obtained.