Chemistry
Table salt becomes sticky in the presence of moisture because :
- It is deliquescent
- It is hygroscopic
- It contains impurities which are deliquescent
- It is a good drying agent.
Water
39 Likes
Answer
It contains impurities which are deliquescent
Reason — Table salt [sodium chloride] contains impurities like magnesium chloride and calcium chloride, which are deliquescent. Hence, table salt absorbs moisture in rainy season and turns sticky.
Pure sodium chloride is not deliquescent. NaCl does not absorb moisture directly; hygroscopic substances only absorb water without dissolving. Drying agents absorb moisture; table salt is not used for this purpose.
Answered By
19 Likes
Related Questions
The solubility of which of the following substances decreases with a rise in temperature :
- Potassium chloride
- Hydrated sodium sulphate
- Calcium hydroxide
- Potassium nitrate
The crystalline substance that does not contain water of crystallisation is:
- Plaster of paris
- Potash alum
- Potassium permanganate
- Epsom salt
Which of the following substances can act as a dehydrating as well as a drying agent.
- Oxalic acid
- Conc. nitric acid
- Washing soda
- Conc sulphuric acid
Which of the following is a deliquescent salt ?
- CuSO4
- FeCl3
- KCl
- ZnSO4