Question

Why mercury used in the barometer instead of water?

Answer 1

Hey Mate..!!

Here's Your Answer..!!

There are several reasons for using Mercury in a barometer instead of water.

✨ Mercury doesn't stick to the walls of the barometer.

✨ Mercury is opaque and therefore can be seen.

✨ Mercury doesn't need to rise much. It has a reasonable size till which atmospheric pressure can be measured.

✨Mercury remains in liquid state.



Hope This Helps..!!

#BeBrainly❤️

Answer 2

Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure. A barometer using water, for instance, would need to be 13.6 times taller than a mercury barometer to obtain the same pressure difference.