(i) Why is Crystallization better than evaporation for separation of mixtures. (ii) How is heating of sugar and heating of ammonium chloride different from each other? Explain your answer.
Answers
ANSWER:
Crystallization is the better method of separating the mixture than evaporation. This is because, on evaporation, some of the solid particles in mixture get decomposed leaving behind impurities whereas, in crystallization, pure crystals of solids are obtained.
Heating of sugar is a compound change-As the sugar twists on heating (Loses its properties, change in synthesis). Heating of Ammonium chloride is a physical change-It just changes its state yet piece stays same. ... So heating of sugar is an endothermic, deterioration and oxidation response.
Hope it helps u..
Answer:
Crystallization is the better method of separating the mixture than evaporation because on evaporation, some of the solid particles in mixture get decomposed leaving behind impurities whereas, in crystallization, pure crystals of solids are obtained.
Heating of sugar is a chemical change and loses its composition on heating and also on heating makes new compound. Heating of ammonium chloride is a physical change it only changes its state but the composition remains same. it on heating changes from solid to gas.
hope it will help you.....