Advertisements
Advertisements
प्रश्न
Explain clearly how conc, H2SO4 is used as dehydrating as well as drying agent.
उत्तर
Conc. sulphuric acid is hygroscopic in nature and can remove moisture from other substances; therefore, it is used as a drying agent. It is also used as a dehydrating agent because it has a strong affinity for water and thus absorbs water quickly from compounds.
APPEARS IN
संबंधित प्रश्न
Give four substances which contain water of crystallization and write their common names.
Give reason for the following:
Anhydrous calcium chloride is used in a desiccator.
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid NaOH.
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid Na2CO3 .10H2O
Name two crystalline substances which do not contain water of crystallization.
What happen to the crystals of washing soda when exposed to air? Name the phenomenon exhibited.
Name the salt which on hydrolysis forms acidic. Give a balanced equation for the following reaction.
Answer the question below:
If copper sulphate-5-water is heated, anhydrous copper sulphate is formed. What is its colour?
Answer the question below:
By what means, other than heating, could you dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
Name the salt which on hydrolysis forms basic. Give a balanced equation for the following reaction.