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Questions
What is a ‘salt’?
Answer the following question related to salts and their preparations:
What is a 'salt'?
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Solution
Salt is a compound formed by the partial or total replacement of the ionizable hydrogen atoms of an acid by a metallic ion or an ammonium ion.
RELATED QUESTIONS
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.
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
The number of molecules of water of crystallisation present in washing soda crystals is ______.
Give one example of a salt which gives an aqueous solution having:
pH less than 7
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
Define the following term:
Hygroscopy
Taking sodium carbonate as an example, give the meaning of the following terms:
Water of crystallization
State what would you observe when :
Washing soda crystals are exposed to the atmosphere.
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
Write any five uses of salts.
