What is acids? Give any two examples.
Acids are those chemical substances that gives hydrogen ions when dissolved in water.
For example: HCl -----> H+ + Cl-
H2SO4 -----> 2H+ + SO4--
Write one use of each of the following.
i. Boric acid: Washing eyes and wounds.
ii. Nitric acid: Making explosives, plastics and dyes.
iii. Tartaric acid: Used in baking powder.
iv. Sodium hydroxide: Making soap, detergents, paper, etc.
v. Calcium oxide: Softening hardwater, purifying sugar, etc.
vi. Calcium sulphate: plastering fractured bones.
vii. Aluminium chloride: Used in dry cell as an electrolyte.
viii. Zinc sulphate: Making pigment in eyes.