What do you observe when
(i) A saturated solution of potassium nitrate prepared at 80°C is allowed to cool to room temperature.
(ii) An aqueous solution of sugar is heated to dryness.
(iii) A mixture of iron filings and sulfur powder is heated strongly.
What do you observe when
(i) A saturated solution of potassium nitrate prepared at 80°C is allowed to cool to room temperature.
(ii) An aqueous solution of sugar is heated to dryness.
(iii) A mixture of iron filings and sulfur powder is heated strongly.
(i) When a saturated solution of potassium nitrate(KNO3) prepared at 80°C is allowed to cool to room temperature crystallization happens.
Crystallization is the transformation of a liquid or gaseous state substance to a liquid state.
This results in the solidification of potassium nitrate and therefore it can get separated easily.
(ii) When an aqueous(H2O) solution of sugar is heated to dryness it will get charred.
Initially, the water present in the solution will evaporate and after that sugar will get charred.
(iii) When a mixture of iron filings(Fe) and sulfur powder(S) is heated strongly a compound named iron sulfide will be formed.
Iron sulfide formed will be black in color.
Fe(s)+S(s)→FeS(s)
(i) When a saturated solution of potassium nitrate(KNO3) prepared at 80°C is allowed to cool to room temperature crystallization happens.
Crystallization is the transformation of a liquid or gaseous state substance to a liquid state.
This results in the solidification of potassium nitrate and therefore it can get separated easily.
(ii) When an aqueous(H2O) solution of sugar is heated to dryness it will get charred.
Initially, the water present in the solution will evaporate and after that sugar will get charred.
(iii) When a mixture of iron filings(Fe) and sulfur powder(S) is heated strongly a compound named iron sulfide will be formed.
Iron sulfide formed will be black in color.
Fe(s)+S(s)→FeS(s)
