Why Mercury is Used in Barometer

Why is mercury preferred over water in a barometer. High density scales down the pressure headh to repesent same magnitude of pressure in a tube of smaller.

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So we cannot replace mercury by.

. These advantages would be- Mercury does not stick to glass and hence theres very little chance of a stray drop or two of mercury obscuring you. While a barometer using water for instance would need to be 136 times higher column length than a mercury barometer to obtain the. This allows mercury to be used in a small container.

1Mercury is more dense. That is if water is used in barometer tube instead of mercury the length of the tube must be greater than 10326 cm. Why Is Mercury Used In Barometers.

Mercury is used in barometers and not water. Due to this luminescent property of mercury it can make its measurements stand out clearly. As well as the mercury has lower vapour pressure thus its molecules never get evaporated into the evacuated portion and hence it increases the accuracy while measurement.

While there are some drawbacks to using mercury the advantages of this. Why dont we use water instead of mercury in barometer. Explain why water cannot be used in place of mercury in a barometer.

Why mercury is used in pressure barometer. Why Mercury is Used in Barometers. The atmospheric pressure at sea level 76cm of Hg 101310 5 Pascal.

At 139 gcm2 mercury is the most dense substance to exist as a liquid at room temperature. Mercury is used in barometers because of its high density. The atmospheric pressure at sea level 76cm of Hg 101310 5 Pascal.

Again mercury is a shiny metal that can be easily identified and measured in the barometer tube. Because mercury is 14 times denser than water it can. If we used water instead of mercury it requires a tube of 10 m which makes it inconvenient to use.

So we cannot replace. And also because it has very small vapour pressure at normal temperature. In addition mercury has a relatively lower specific heat than other elements.

By comparison water has a density of 100. Mercury has many advantages when used as a measuring liquid in a barometer tube. Its relative density is 13534 times that of water.

That is if water is used in barometer tube instead of mercury the length of the tube must be greater than 10326 cm. This is because the high density of mercury gives a reasonable height of the column to measure atmospheric pressure. Because of this property when there is a change in pressure the change in height of the mercury in the barometer tube will be very reasonable.

By the use of mercury in a barometer the total height of the barometer gets reduced as it has a higher density. Because of this property when there is a change in pressure the change in height of the mercury in the barometer tube will be very reasonable. Explain why water cannot be used in place of mercury in a barometer.

The Science Behind It. Mercury is still used in barometers today because it has several benefits over other materials. Explain why water cannot be used in place of mercury in a barometer.

The higher the density of a liquid the lower its height. Why Is Mercury Used In A Barometer. In the barometer mercury is used as the barometric liquidMercury has high density.

This is because the high density of mercury gives a reasonable height of the column to measure atmospheric pressure. Why is Mercury Metal Used in Barometers. Why Mercury Is Used In Barometer.

The atmospheric pressure at sea level 76cm of Hg 101310 5 Pascal. Why cant we use water instead of mercury in barometer. Mercury has several advantages over water which was why it was preferably used to make the very first barometers a long time ago.

So we cannot replace. Before moving to our main question lets know about the. Mercury is also a good conductor of heat.

Mercury is used in barometers due to its high density. Answer 1 of 33. Because of this property when there is a change in pressure the change in height of the mercury in the barometer tube will be very reasonable.

That is if water is used in barometer tube instead of mercury the length of the tube must be greater than 10326 cm. While a barometer using water for instance would need to be 136 times higher column length than a mercury barometer to obtain the same pressure difference. The atmospheric pressure at sea level 76cm of Hg 101310 5 Pascal.

In the barometer mercury is used as the barometric liquid. Mercury is used in barometers because when the first barometer was created mercury was shown to move up or down according to the air pressure. Why water Cannot be used in mercury barometer.

Because of this property when there is a change in pressure the change in height of the mercury in. So we cannot replace. So to measure the atmospheric pressure which is 760 mm of mercury you need a barometer with mercury of length slightly more than 076 meter say one meter to cover the special cases of some higher pressure.

Mercury is used in barometers and not water. That is if water is used in barometer tube instead of mercury the length of the tube must be greater than 10326 cm. Here are the four main reasons why mercury is used as pressure fluid in barometers.

Mercury has high density. In the barometer mercury is used as the barometric liquidMercury has high density. The use of mercury in barometers is a practice that dates back to the 17th century.

If you used water for example which has a low density your barometer would have to be. In the barometer mercury is used as the barometric liquidMercury has high density. If you use water you have to have the length of.

Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained. Why dont we use water instead of mercury in barometer. Explain why water cannot be used in place of mercury in a barometer.

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