16. Give the name of each of the processes described below which takes place when salts are exposed to the air for some time.

(i) Anhydrous copper(I) sulphate becomes wet. (1 mk)

(ii) Magnesium chloride forms an aqueous solution. (1 mk)

(iii) Fresh crystals of sodium carbonate become covered with white powder. (1 mk)

Question

30-07-2024
Chemistry

Answered

16. Give the name of each of the processes described below which takes place when salts are exposed to the air for some time.

(i) Anhydrous copper(I) sulphate becomes wet. (1 mk)

(ii) Magnesium chloride forms an aqueous solution. (1 mk)

(iii) Fresh crystals of sodium carbonate become covered with white powder. (1 mk)

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-07-30T14:11:04-04:00

Final answer:

Efflorescence, dissolution, and hygroscopicity are processes that describe the behavior of salts exposed to air.

Explanation:

Efflorescence: This process describes when anhydrous salts, such as anhydrous copper(I) sulfate, absorb moisture from the air and become wet.

Dissolution: In this case, magnesium chloride forms an aqueous solution when exposed to air, where the salt dissolves in water to form hydrated ions.

Hygroscopicity: When fresh crystals of sodium carbonate absorb water vapor from the air, they become covered with a white powder due to the formation of a hydrate.

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