Chemistry Class 10 Solutions Acids,Bases And Salts

1.Give the names and formulae of two strong acids and two weak acids.
Solution :
(a) Citric acid – Lemon.
(b) Oxalic acid – Tomatoes.
(c) Lactic acid – Sour milk or curd.
(d) Tartaric acid – Tamarind.

2.Name one natural source of each of the following acids :
(a) Citric acid
(b) Oxalic acid
(c) Lactic acid
(d) Tartaric acid
Solution :
Ant sting and Nettle leaf sting.

3.Name one animal and one plant whose stings contain formic acid (or methanoic acid).
Solution :
On diluting an acid,the concentration of hydronium ions (H3O+) in it decreases.

4.How is the concentration of hydronium ions (H3O+) affected when the solution of an acid is diluted ?
Solution :On diluting an acid,the concentration of hydronium ions (H3O+) in it decreases.

5.Write word equations and then balanced equations for the reactions taking place when :
(a) dilute sulphuric acid reacts with zinc granules.
(b) dilute hydrochloric acid reacts with magnesium ribbon.
(c) dilute sulphuric acid reacts with aluminium powder.
(d) dilute hydrochloric acid reacts with iron filings.
Solution :