Salt
A salt is a compound formed by the partial or complete neutralization of an acid by a base. Basic properties of salt include its salty or bitter taste, solubility in water and its unique coloration. This note provides information about properties, preparation, uses of salts.
Summary
A salt is a compound formed by the partial or complete neutralization of an acid by a base. Basic properties of salt include its salty or bitter taste, solubility in water and its unique coloration. This note provides information about properties, preparation, uses of salts.
Things to Remember
- A salt is a compound formed by the partial or complete neutralization of an acid by a base. A salt is a neutral substance. It does not have acidic and basic properties.
- Some salts are salty in taste but most of the salts are bitter in taste.
- Salts do not cause any change in the color of indicators like litmus paper, methyl orange and phenolphthalein.
- Some salts are white while some salts are colored.
- Most of them are soluble in water.
MCQs
No MCQs found.
Subjective Questions
No subjective questions found.
Videos
No videos found.
Salt
A salt is a compound formed by the partial or complete neutralization of an acid by a base. Some salt are salty while most of them taste bitter. Sodium chloride, Potassium chloride, calcium chloride, calcium sulphate, etc. are some examples of salts.
Properties of salts
- Some salts are salty in taste, but most of the salts are bitter in taste.
- Salts normally do not cause any change in the color of indicators like litmus paper, methyl orange, and phenolphthalein.
- Some salts are white while some salts are colored.
- Most of them are soluble in water.
Preparation of salts
Salts can be prepared in many ways. Some methods of preparing salts are given below:
- The reaction between an acid and a base: Common salt (NaCl) can be prepared by the reaction of sodium hydroxide with hydrochloric acid.
NaOH + HCl → NaCl + H2O - The reaction between an acid and a metal: A metal displaces hydrogen from an acid to form a salt.
Zn + 2HCl → ZnCl2 + H2
Mg + 2HNO3 → Mg (NO3)2 + H2 - Reaction between a metal oxide or another salt with and acid
ZnO + H2SO4 → ZnSO4 + H2O - By a direct combination of metals and non-metals
2Na + Cl2 → 2NaCl
Some salts and their uses are given below:
| S.N | Salts | Uses |
| 1. | Sodium chloride | As edible salts (table salt, rock salt) |
| 2. | Copper sulphate | As insecticides |
| 3. | Magnesium sulphate | Used in constipation |
| 4. | Calcium sulphate | Plastering fractured bones, in the manufacture of chalk. |
Lesson
Acid, Base and Salt
Subject
Science
Grade
Grade 8
Recent Notes
No recent notes.
Related Notes
No related notes.