19) i)What do you mean by the term hydrated salt? Give two examples of hydrated salts which are white and state their chemical formula. ii)Why is tooth paste used for cleaning teeth?
Answers
Answer:
A hydrated salt is a crystalline salt molecule that is loosely attached to a certain number of water molecules. Salt is created when an acid's anion and a base's cation are combined to produce an acid-base molecule. ... In a hydrated salt, the water molecules are incorporated into the crystalline structure of the salt.
The two examples are washing soda and gypsum. . It is used for washing purposes. It is white in color.
Salts are called hydrated salts because there are one or more chemically combined water molecule. This is known as water of crystallization. It indicates the number of water molecules which are chemically combined with the salt in its crystalline state.
Answer:
(i) Hydrated salt: When a fixed number of molecules of water are present in a crystalline salt, then the salt is called hydrated salt. The water molecules present in the hydrated salt are called as the water of crystallization.
(ii) Two examples of hydrated salts:
a. Washing soda
The chemical formula of washing soda is Na2CO3.10H2O
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