Question

How can we check the purity of liquids?

Answer 1

Answer:

Pure liquids:

• The pure liquids have a fixed boiling point at a constant pressure.
• Hence we can check the purity of a solid by measuring its boiling point.
• If a liquid is impure it means it contains another substance and due to this other substance the boiling point of that liquid will change.

For example, the boiling point of pure Water$\left({\mathrm{H}}_2\mathrm{O}\right)$ is$100°\mathrm{C}$.

If there are any impurities dissolved in it, its boiling point will be changed it will not boil at $100°\mathrm{C}$.

Conclusion:

Therefore, we can check the purity of liquids by measuring their boiling point.