In simple distillation, the thermometer is placed:
Correct answer: C. At the mouth of the condenser
- A. In the distillation flask
- B. Above the condenser
- C. At the mouth of the condenser
- D. In the receiver flask
Explanation
The thermometer measures the temperature of the vapors entering the condenser. This temperature corresponds to the boiling point of the liquid being distilled. Correct placement ensures accurate identification of the distilling component.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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