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Why mercury is used in barometer for mea...

Why mercury is used in barometer for measuring atmospheric pressure?

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To answer the question of why mercury is used in barometers for measuring atmospheric pressure, we can break it down into several key reasons: ### Step-by-Step Solution: 1. **Non-Sticking Property**: - Mercury does not adhere to the glass surface of the barometer. This is important because it allows for a clear and accurate measurement of the height of the mercury column without any interference from the liquid sticking to the sides of the tube. 2. **Non-Volatility**: ...
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Explore conceptually related problems

A manometer contains a liquid of density 5.44g//cm^(3) is attached to a flask containing gas 'A' as follows If the same liquid is used in barometer to measure the atmospheric pressure, then what will be the lengh of the liquid columnm which exerts pressure equal to 1 atm ? (density of Hg=13.6g//cm^(3) )

A monometer contains a liquid of density 5.44g//cm^(3) is attached to a flask containing gas A' as follows If the same liquid is used in barometer to measure the atmospheric pressure, then what will be the length of the liquid column, which exerts pressure equal to 1 atm ? (density of Hg = 13.6 g//cm^(3) )

What would be the height of column in barometer if water ("density" = 1000 Kg//m^(3)) is used instead of mercury for measuring atmospheric pressure?

For a solution at atmospheric pressure

Explain why does the mercury level in a barometer go down when atmospheric pressure decreases?

Torricelli was the first do devise an experiment for measuring atmospheric pressure . He took calibrated hard glass tube , 1 m in lengt and of uniform cross section , closed at one end . He filled the whole tube with dry mercury taking care than no air or water droplets remain inside the tube , closed the opposite end of the tube tightly with thumb and inverted it . He put this inverted mercury tube into a mercury through , taking care that the end of the tube remains inside the mercury through , An interesting thing was noticed . Mercury in the tube fell down at first and then stopped at a particular position . The height was 76 cm above the free surface of mercury in the through . When the given tube was inclined or lowered in the mercury trough , the vertical haight of mercury level in the tube was always found constant . Torricelli explained this by saying that the free surface of mrcury in the trough . Hence , the hydrostatic pressure exerted by the trough measures the atmospheric pressure . If a small hole is made at point P in the barometer tube , then

Torricelli was the first do devise an experiment for measuring atmospheric pressure . He took calibrated hard glass tube , 1 m in lengt and of uniform cross section , closed at one end . He filled the whole tube with dry mercury taking care than no air or water droplets remain inside the tube , closed the opposite end of the tube tightly with thumb and inverted it . He put this inverted mercury tube into a mercury through , taking care that the end of the tube remains inside the mercury through , An interesting thing was noticed . Mercury in the tube fell down at first and then stopped at a particular position . The height was 76 cm above the free surface of mercury in the through . When the given tube was inclined or lowered in the mercury trough , the vertical haight of mercury level in the tube was always found constant . Torricelli explained this by saying that the free surface of mercury in the trough . Hence , the hydrostatic pressure exerted by the trough measures the atmospheric pressure . If this expriment uses water instead of mercury , then A. length of water will be equal to 76 cm B. length of water will be less than 76 cm C. length of water will be greater than 76 cm D. none of the above

Torricelli was the first do devise an experiment for measuring atmospheric pressure . He took calibrated hard glass tube , 1 m in lengt and of uniform cross section , closed at one end . He filled the whole tube with dry mercury taking care than no air or water droplets remain inside the tube , closed the opposite end of the tube tightly with thumb and inverted it . He put this inverted mercury tube into a mercury through , taking care that the end of the tube remains inside the mercury through , An interesting thing was noticed . Mercury in the tube fell down at first and then stopped at a particular position . The height was 76 cm above the free surface of mercury in the through . When the given tube was inclined or lowered in the mercury trough , the vertical haight of mercury level in the tube was always found constant . Torricelli explained this by saying that the free surface of mercury in the trough . Hence , the hydrostatic pressure exerted by the trough measures the atmospheric pressure . If an additional hole is also made at P ' at the top point of the tube , then A. mercury will not come out of the tube B. mercury may come out of the tube after some time . C. mercury will come out of the tube instantly D. none of these

The normal atmospheric pressure is :

Liquid pressure and atmospheric pressure

VMC MODULES ENGLISH-STATES OF MATTER-ILLUSTRATION
  1. Temperature of a gas is 98.6^(@)F. Convert this into Kelvin.

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  2. Why mercury is used in barometer for measuring atmospheric pressure?

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  3. What is the type of graph between log P and log ((1)/(V)) at constant ...

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  4. A 10.0 L cylinder of H(2) gas is connected to an evacuated 290.0 L tan...

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  5. 500 ml of air at 760 mm Hg pressure were compressed to 200 ml. What wi...

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  6. 500 mL of nitrogen at 27^(@)C is cooled to -5^(@)C at the same pressur...

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  7. An open flask contains air at 27^(@)C. Calculate the fraction of air t...

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  8. An iron cylinder contains helium at a pressure of 250 k Pa at 300 K. T...

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  9. At 3 atm and 17^(@)C a gas cylinder has a volume of 10 litre. If the t...

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  10. A certain quantity of a gas occupied 100ml when collected over water a...

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  11. What is the volume of 6 g of hydrogen at 1.5 atm and 273^(@)C ?

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  12. Calculate the volume occupied by 7 g of nitrogen gas at 27^(@)C and 75...

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  13. Calculate the temperature of 2.0 moles of a gas occupying a volume of ...

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  14. The density of ammonia at 30^(@)C and 5 atm pressure is

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  15. Pressure of 1 g of an ideal gas A at 27 ^(@)C is found to be 2 bar. Wh...

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  16. 2 g of a gas collected over water at 20^(@)C and under a pressure of 7...

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  17. If 250ml of N(2) at 30^(@)C and a pressure of 250mm Hg are mixed with ...

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  18. 20 dm^(3) of SO(2) diffuse through a porous partition in 60 s. what vo...

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  19. Through the two ends of a glass tube of length 200cm hydrogen chloride...

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  20. From two identical holes, nitrogen and an unknown gas are leaked into...

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