Advertisements
Advertisements
प्रश्न
What happen to the crystals of washing soda when exposed to air? Name the phenomenon exhibited.
उत्तर
When washing soda crystals are exposed to air, they lose their water of crystallisation, a phenomenon known as efflorescence.
\[\ce{\underset{Washing soda}{Na2CO3.10H2O} ->[\Delta]\underset{carbonate}{\underset{Sodium}{Na2CO3}} + 10H2O}\]
APPEARS IN
संबंधित प्रश्न
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid Na2CO3 .10H2O
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Conc. Sulphuric acid
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Iron (III) Chloride
Why does common salt get wet during the rainy season?
How can this impurity be removed?
Name two crystalline substances which do not contain water of crystallization.
Answer the question below:
What name is given to the water in the compound copper sulphate-5-water?
Answer the question below:
Why hydrated copper sulphate turns white on heating.
Select the correct answer from A, B, C, D and E.
A deliquescent compound.
Give a suitable chemical term for:
The process in which a substance absorbs moisture from the atmospheric air to become moist, and ultimately dissolves in the absorbed water.
