Salts
Salts
Salts are ionic compounds made of a cation other than H+ ion and an anion other than OH- ion.
Formation of salts : Salts are formed in many reactions involving acids and bases.
1. By Neutralization of acids and bases :
Salts are the product (besides water) of a neutralization reaction.
For example
NaOH + HC1 → NaCl + H2O
2. By action of acids on metals :
In a reaction between an acid and a metal, salt is produced along with hydrogen, Metal Acid Salt Hydrogen
Zn + H2SO4 → ZnSO4 + H
3. By action of acids on metal :
Carbonates and hydrogen carbonates Salts are produced in reactions between acids and metal carbonates and hydrogen carbonates (bicarbonates) along with water and carbon dioxide.
CaCO3 + 2HC1 → CaCl2 + H2O + CO
Type of salt and the nature of its aqueous solution
| Salt of Acid | Salt of Base | Nature of Salt Solution | pH (at 25°C) |
|---|---|---|---|
| Strong | Strong | Neutral | 7 |
| Weak | Strong | Basic | > 7 |
| Strong | Weak | Acidic | < 7 |
| Weak | Weak | More information required | - |