Preparation and Uses of Sodium Hydroxide

Chemistry

definition

Salt

Salts are ionic compounds that result from the neutralization reaction of an acid and a base. They are composed of equal number of cations and anions so that the salt is electrically neutral. These component ions can be inorganic, such as chloride (), or organic, such as acetate (); and can be monoatomic, such as Fluoride (), or polyatomic, such as Sulfate ().
There are several varieties of salts. Types of salts include acidic salts, basic salts, neutral salts, hydrated salts etc. 
of aqueous solution of acidic salts will be less than 7. For aqueous solution of basic salt,  and for neutral salts, .

REVISE WITH CONCEPTS

Water of Crystallisation

ExampleDefinitionsFormulaes

LEARN WITH VIDEOS

Quick Summary With Stories

Important Questions

Match the following columns:

Column (I) Column (II) 
(1) Bleaching powder(a) Sodium bicarbonate
(2) Baking soda(b) Sodium carbonate 
(3) Washing soda(c) Calcium oxychloride
(4) Plaster of Paris  (d) Calcium sulphate hemihydrate

View solution
>

What is meant by water of crystallization of a substance? Describe an activity to show the water of crystallization.

View solution
>

(a) What is plaster of Paris? Write the chemical formula of plaster of Paris.
(b) How is plaster of Paris prepared? Write chemical equation of the reaction involved.
(c) Explain why plaster of Paris should be stored in a moisture-proof container.
(d) State two important uses of plaster of Paris.

View solution
>

Name a salt which does not contain water of crystallization.

View solution
>

Which of the following salts does not contain water of crystallisation?

View solution
>

Fill in the following table
Name of the saltFormula Salt obtained from BaseSalt obtained from Acid
(i) Ammonium ChlorideNHCl NHOH-
(ii) Copper sulphate --HSO
(iii) Sodium chlorideNaClNaOH-
(iv) Magnesium NitrateMg(NO)-HNO
(v) Calcium nitrateCa(NO) Ca(OH)-

View solution
>

(a) What is meant by "water of crystallisation" in a substance? Explain with an example.
(b) How would you show that blue copper sulphate crystals contain water of crystallisation?
(c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

View solution
>

Match the chemical substances given in column (I) with their appropriate application given in column (II):
Column I Column II
(1) Bleaching powder(i) Preparation of glass
(2) Baking soda(ii) Production of and
(3) Washing Soda(iii) Decolourisation
(4) Sodium chloride(iv) Antacid

View solution
>

Match the following

Column (A)Column (B)
(a)(i)Caustic soda
(b)(ii)Baking soda
(c)(iii)Blue vitriol
(d)(iv)Washing soda

View solution
>

The sodium compound which is used for softening hard water :

View solution
>