Table of Contents
- 1 Why water is not used as a barometer liquid?
- 2 Why is not water used as a barometric liquid Give two reasons?
- 3 Why can’t we use water instead of mercury as barometric liquid?
- 4 Can water be used as barometric liquid?
- 5 Why is mercury a better barometric fluid?
- 6 What are the disadvantages of using water as a barometric liquid?
- 7 Can water be used as a barometric liquid?
- 8 Is mercury expensive or cheap?
Why water is not used as a barometer liquid?
Water is not a suitable barometric liquid because: (i) The vapour pressure of water is high, so its vapours in the vacuum space will make the reading inaccurate. (ii) Water sticks with the glass tube and wets it, so the reading becomes inaccurate.
Why is not water used as a barometric liquid Give two reasons?
The two reasons why water is not a suitable barometric liquid is: The density of water is low hence 10.4m height of water column is required in order to balance the normal atmospheric pressure. However, it is not convenient to take a tube of height 10.4m for a barometer.
Which liquid is used as barometric liquid?
mercury
In the barometer mercury is used as the barometric liquid.
Why can’t we use water instead of mercury as barometric liquid?
Explain why water cannot be used in place of mercury in a barometer? The atmospheric pressure at sea level = 76cm of Hg = 1.013×105 Pascal. That is, if water is used in barometer tube instead of mercury, the length of the tube must be greater than 10.326 cm. So, we cannot replace mercury by water in the barometer.
Can water be used as barometric liquid?
Water is not a suitable barometric liquid because: (i) The density of water is low (103 kg m-3). Water barometer will support 10.4m of water at sea level.
Is pressure greater in salt water?
Salt water is denser than fresh water. Pressure will be greater beneath the salt water than the fresh water at the same depth. The pressure on an object submerged in a fluid does not depend on the surface area of the fluid or object.
Why is mercury a better barometric fluid?
its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v.
What are the disadvantages of using water as a barometric liquid?
The use of water in a barometer has the following disadvantages :
- The density of water is low , so nearly 10.4 m height of water column is needed to balance the normal atmospheric pressure.
- The vapour pressure of water is high, so the vapours in the vacuum space shall make the reading inaccurate.
Why mercury is used as barometric liquid?
Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained. and also because it has very small vapour pressure at normal temperature. High density scales down the pressure head(h) to repesent same magnitude of pressure in a tube of smaller height.
Can water be used as a barometric liquid?
water cannot be used as barometric liquid because it’s density is lower than Mercury . hence it requires a barometer whose height is around 11 meters.
Is mercury expensive or cheap?
Mercury is cheap because the company offers a wide variety of discounts that almost anyone can get, including discounts for signing documents electronically and setting up autopay. Mercury ranked 7th overall in WalletHub’s cheap car insurance study of more than 40 major insurers.
Why can’t humans go deep underwater?
Since the water down at those depths is still liquid and not solid, there is not enough depth in our ocean to solidify water simply with pressure. Water remains a liquid at even 1101 bar or pressure. The human body would therefore not solidify under that pressure.