Advertisements
Advertisements
प्रश्न
How would you confirm that a colourless liquid given to you is pure water?
Advertisements
उत्तर
- Every liquid has a characteristic boiling point. Pure water has a boiling point of 100°C (373 K) at 1 atmospheric pressure.
- If the given colourless liquid boils even slightly above or below 100°C, then the given liquid is not pure water.
- It must boil at a sharp 100°C. Thus, by observing the boiling point, we can confirm whether a given colourless liquid is pure water or not.
APPEARS IN
संबंधित प्रश्न
How is distillation more advantageous than evaporation?
Give one word answer
The liquid which evaporates and then condenses during the process of distillation
Select the correct alternative from the choices given for the following statement:
Components of crude petroleum can be separated by
Write an answer to the following question in your own words.
Which precaution will you take while using the methods of distillation and separation by separating funnel?
What will happen if the upper outlet of the condenser is connected to the tap instead of the lower outlet?
What is the difference between simple distillation and fractional distillation?
Which of the tubes in Fig. 2.1 (a) and (b) will be more effective as a condenser in the distillation apparatus?
Assertion (A): Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97°C) and propanone (boiling point 56°C).
Reason (R): Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation.
Two liquids (A) and (B) can be separated by the method of fractional distillation. The boiling point of liquid (A) is less than boiling point of liquid (B). Which of the liquids do you expect to come out first in the distillate? Explain.
A mixture of benzene and chloroform is separated by ______.
