Question

What is the relative density bottle? How can you measure the relative density of a substance using a relative density bottle?

Answer 1

1. Relative density: The relative density of a substance is the ratio of its density to that of water.
2. The relative density of a liquid can be determined by using a special bottle called the relative density bottle.
3. This bottle is also called the specific gravity (SG) bottle.
4. The relative density bottle is a small glass bottle with a stopper having a fine capillary tube.
5. It has a fixed capacity, which is generally marked on the wall of the bottle.
6. When the bottle is completely filled with a liquid and the stopper inserted, the excess liquid rises up through the capillary tube and drains out.
7. This ensures that the bottle always contains a fixed volume of any liquid filled in it. It can be used to determine the density of the liquids.