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प्रश्न
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
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उत्तर
When washing soda (Na2CO3.10H2O) is exposed to air, it loses 9 molecules of water to form a monohydrate.
\[\ce{Na2CO1.10H2O ->[air] Na2CO1.H2O + 9H2O}\]
संबंधित प्रश्न
Why is sodium chloride required in our body?
Give one example of a salt which gives an aqueous solution having:
pH less than 7
Write the name and formula of one salt which contains:
Two molecules of water of crystallisation.
Write the name and formula of one salt which contains:
Five molecules of water of crystallisation.
You are asked to prepare hard water in your laboratory. Select a group from the following groups of salts, any salt of which you may dissolve in distilled water to obtain hard water.
(A) NaCl; Na2SO4; KCl
(B) NaCl; CaCl2; KCl
(C) CaCl2; CaSO4; MgSO4
(D) Na2SO4; CaSO4; MgSO4
What is deliquescence? What name is given to the compounds exhibiting such property?
Give four substances which contain water of crystallization and write their common name.
A salt that is formed by the complete neutralization of an acid and a base is called ______ salt.
Salt which is formed by the partial replacement of hydrogen ions of an acid by a metal is called ______.
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Sodium zincate
