what salts are made from?

Question

Potassium hydroxide and sulphuric acid
Magnesium hydroxide and nitric acid
sodium hyroxide and ethanoic acid

Answer 1

Salts are made by the reaction of acids with bases (alkali) and vice versa (reversible reaction).

alkali + acid = salt + water

therefore:

potassium hydroxide + sulphuric acid = potassium sulphate + water
( alkali ) ( acid ) ( salt )

magnesium hydroxide+nitric acid = magnesium nitrate + water
( alkali ) ( acid ) ( salt )

sodium hyroxide + ethanoic acid = sodium acetate +water
( alkali ) ( acid ) ( salt )

Answer 2

for getting the salt, remove the OH from the base and remove the H from acid and write them together making sure that the valency is balanced

(i) potassium sulphate K2SO4 or potassium bisulphate KHSO4 depending on how many H is removed (first one is most appropriate)
(ii) magnesium nitrate Mg(NO3)2
(iii) Sodium ethanoate CH3COONa

Answer 3

Salts are made from an acid and an alkali.

Or in other words from the combination of highly electropositive elements (alkali and alkaline earth metals) and halogens which are highly electronegative in nature.

For example:
1. NaOH + HCl --> NaCl + H2O
Alkali Acid Salt Water

2. Na + Cl --> NaCl
Alkalimetal Halogen Salt

Answer 4

K2SO4 (Potassium sulphate)
Mg(NO3)2 (Magnesium nitrate)
CH3COONa (Sodium ethanoate)