Question

• Let us try to separate acetone and water from their mixture.
• Take the mixture in a distillation flask. Fit it with a thermometer.
• Heat the mixture slowly keeping a close watch at the thermometer.
• The acetone vaporises, condenses in the condenser and can be collected from the condenser outlet.
• Water is left behind in the distillation flask.

1. What do you observe as you start heating the mixture?
2. At what temperature does the thermometer reading become constant for some time?
3. What is the boiling point of acetone?
4. Why do the two components separate?

NCERT Class 9th Science Ch 2 Is Matter Around Us Pure

Answer 1

"1) While start heating, acetone separates from the water because of the lower boiling point compared to the water.

2) When the temperature becomes at 56 degree Celsius thermometer reading becomes constant.

3) The boiling point of acetone is 56-degree Celsius.

4) The difference in boiling water was the reason for separation.

"

Answer 2

#1.) Acetone separate from water due to lower boiling point of it .

#2.) at 56 ° celsius thermometer reading is constant.

#3.) boiling point of acetone is 56° Celsius.

#4.) due to difference in boiling point