Describe an experiment to demonstrate that water absorbs heat during b

1.	Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.
Answer» TAKE some water in the beaker. Suspend a thermometer in a beaker in water so that the bulb of the thermometer remains in water without touching the bottom or the sides. Supply the HEAT by the burner and note the TEMPERATURE at room temperature. Maintain the record of temperature after every minute. Temperature rises and as it reaches 100°C water starts boiling. Though heat is being SUPPLIED, the temperature does not RISE and it remains constant at 100°C and bubbles formed are seen. Conclusion: boiling point of water is 100°C and at boiling point heat supplied is absorbed by water at constant temperature.

Describe an experiment to demonstrate that water absorbs heat during boiling at a constant temperature.

Answer»

TAKE some water in the beaker. Suspend a thermometer in a beaker in water so that the bulb of the thermometer remains in water without touching the bottom or the sides. Supply the HEAT by the burner and note the TEMPERATURE at room temperature.

Maintain the record of temperature after every minute.

Temperature rises and as it reaches 100°C water starts boiling. Though heat is being SUPPLIED, the temperature does not RISE and it remains constant at 100°C and bubbles formed are seen.

Conclusion: boiling point of water is 100°C and at boiling point heat supplied is absorbed by water at constant temperature.

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