Q1: What is the boiling point of Benzaldehyde?
Answer:
The boiling point of Benzaldehyde is 178 degrees Celsius.
Q2: Define boiling point.
Answer:
The temperature at which the liquid’s vapour pressure equals the air pressure is known as the boiling point.
Q3: Suppose the boiling point of a liquid is 100°C in Delhi. At hill station will it be the same or different? Give reasons.
Answer:
At the hill station, the liquid’s boiling point will be less than 100°C. With a drop in air pressure, the boiling point drops. The air pressure at hill stations is lower than in lowlands.
Q4: What is the effect of an increase of pressure on the boiling point?
Answer:
The boiling point of a liquid rises as the outside pressure increases.
Q5: Why is food cooked more quickly in a pressure cooker?
Answer:
Water boils at a greater temperature in a pressure cooker, hence cooking takes place at a higher temperature.
Q6: What is the effect of a decrease of pressure on the boiling point?
Answer:
The boiling point of a liquid decreases as the outside pressure decreases.
Q7: Why do different liquids have different boiling points?
Answer:
The liquid’s boiling point is determined by intermolecular forces. Because various liquids have varied strengths of intermolecular forces, their boiling points differ.
Q8: What will happen to the boiling point of the liquid if some non-volatile liquid is added to it?
Answer:
The boiling point of the liquid will increase.
Q9: Why do Carboxylic acids have a higher boiling point than hydrocarbons?
Answer:
Carboxylic acids can generate hydrogen bonds, which help to stabilise the molecule and allow the organic chain to form more bonds through dispersion forces.
Q10: What are the materials required for the experiment?
Answer:
Benzene, Benzaldehyde, the aluminium block, fusion tube, stand with clamp, capillary tube, tripod, thermometer, and kerosene burner.
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