With the help of the experiment show the effect of heat anhydrous crystals of sodium chloride and potassium nitrate.
With the help of the experiment show the effect of heat anhydrous crystals of sodium chloride and potassium nitrate.
Procedure :- Gently heat a few crystals of pure sodium chloride (common salt) in one test tube and a few crystals of potassium nitrate in another.
Observation :- On heating, crystals of sodium chloride produce a crackling sound, called decrepitation. This is due to the breaking of bigger crystals of sodium chloride into smaller ones. On the other hand, crystals of potassium nitrate first melt into a colourless liquid, and then, on strong heating, they produce oxygen, which rekindles a glowing splint. Potassium nitrite, a light yellow solid residue, is left behind.
Conclusion: Both the substances do not contain water of crystallization.
Procedure :- Gently heat a few crystals of pure sodium chloride (common salt) in one test tube and a few crystals of potassium nitrate in another.
Observation :- On heating, crystals of sodium chloride produce a crackling sound, called decrepitation. This is due to the breaking of bigger crystals of sodium chloride into smaller ones. On the other hand, crystals of potassium nitrate first melt into a colourless liquid, and then, on strong heating, they produce oxygen, which rekindles a glowing splint. Potassium nitrite, a light yellow solid residue, is left behind.
Conclusion: Both the substances do not contain water of crystallization.
