Prabin Kalikote

Metals are elements which form electropositive ions by losing electrons.
For eg.    Iron, copper, gold, etc.

Any three applications of neutralization reactions are:
i.    Farmers use lime to neutralize the acidity of soil.
ii.   We can neutralize formic acid by using soap.
iii.  Acetic acid is used to neutralize the acid injected by the bumble bee in our skin.

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:...

i.    Hcl + KoH ----------> H₂O + Kcl
ii.   2KoH + H₂SO₄ -----------> K₂SO₄ + 2H₂O
iii.  CuO + H₂SO₄ ----------> CuSO₄ + H₂O
iv.  2NaOH + H₂SO₄ ---------> Na₂SO₄ + 2H₂O
v.   H₂SO₄ + Cu(OH)₂ ---------> CuSO₄ + 2H₂O

We know, sodium hydroxide is an alkali which produces high concentration of hydroxyl ions in a solution but ammonium hydroxide produces low concentration. So, sodium hydroxide is a stronger and ammonium hydroxide is a weak base.

Bases are those substances which may or mayn't dissolve in water but alkalis are the bases which are dissolved in water. Insoluble bases are not alkalis. Therefore we can say that, all alkalis are bases but all bases are not alkalis.

Sodium bicarbonate is formed by partial displacement of hydrogen atoms of the acid. So, sodium bicarbonate is an acid salt.