. The bulb of the thermometer placed at the head of a distillation apparatus sho

Question

. The bulb of the thermometer placed at the head of a distillation apparatus should be adjacent to the condenser. Explain the effects on the temperature recorded if the thermometer were placed (a) below the exit to the condenser and (b) above the exit.

Explanation / Answer

a) If the bulb is below you would have higher temperature vapors because you are measuring the temperature of the vapors closer to when they evaporated. This will cause inaccurate temp readings (higher than what is actually condensing) ---------------> b)If you place the bulb above the condenser, you won't be measuring the vapors directly because they are escaping into the condenser before their temperature can be measured. This will give inaccurate results of room temperature or much lower than what the temperature of the vapors actually are.

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