Chapter 2: Is Matter around us Pure?

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Q
Is Matter around us pure?

Question:

Q.6: How would, you confirm that a colourless liquid given to you is pure water?

Answer:

The temperature at which the vapor pressure of the liquid becomes equal to the atmospheric pressure is called the boiling point. The boiling point of water is 100โฐC or 373K. If the liquid boils at 373K, it is pure water. Similarly, if the liquid freezes at 0โฐC, it is pure water.


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