Advertisements
Advertisements
प्रश्न
What is deliquescence? What name is given to the compounds exhibiting such property?
उत्तर
Deliquescence is the phenomenon by which certain salts absorb moisture from air, lose their water of crystallization and dissolve in it to form a saturated solution.
The substances which exhibit deliquescence are called deliquescent.
For example : Caustic soda NaOH, Caustic potash KOH.
APPEARS IN
संबंधित प्रश्न
State what would you observe when Washing Soda Crystals are exposed to the atmosphere
The pH of a salt used to make tasty and crispy pakoras is 14. Identify the salt and write a chemical equation for its formation. List its two uses.
Write a balanced equation for the preparation of the following salts:
Copper sulphate from Copper Carbonate.
Complete and balance the following chemical equations:
`NaCI (aq) + H_2O (l) `
What happens when a concentrated solution of sodium chloride (brine) is electrolysed? Write the equation of the reaction involved.
Which of the following salts will give an aqueous solution having pH of almost 7?
(a) NH4NO3
(b) NH4Cl
(c) CaCl2
(d) KCl
Name a salts whose solubility increases with temperature.
Answer the following questions below, relating your answers only to salts in the following list:
Sodium chloride, anhydrous calcium chloride, copper sulphate-5-water.
(i) What is the name given to the water in the compound copper sulphate-5-water?
(ii) If copper sulphate-5-water is heated, the water is driven off leaving anhydrous copper sulphate. What is the colour of anhydrous copper sulphate?
(iii) By what means, other than heating, you can dehydrate copper sulphate-5-water and obtain anhydrous copper sulphate?
(iv) Which one of the salts in the given list is deliquescent?
Name A colourless gas which bleaches.
Write any five uses of salts.