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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.
\[\ce{Na2CO1.10H2O ->[air] Na2CO1.H2O + 9H2O}\]
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संबंधित प्रश्न
Give the names and formulae of any two salts. Also name the acids and bases from which these salt may be obtained.
The products of chlor-alkali process are:
(a) NaCl, Cl2 and H2
(b) H2, Cl2 and NaOH
(c) Cl2, Na2CO3 and H2O
(d) NaOH, Cl2 and HCl
The number of molecules of water of crystallisation present in washing soda crystals is:
(a) five
(b) two
(c) ten
(d) seven
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH4)2SO4
Which of these salts will give:
basic solutions (or alkaline solutions)?
Write the name and formula of one salt each which contains:
two molecules of water of crystallisation
What is a ‘salt’?
Explain ‘salt hydrolysis’
Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
Distinguish by a chemical test sodium chloride and sodium sulphide.
Acids react with metallic oxides to produce ______.
