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Why is water or alcohol or acid have a lower meniscus while mercury have an upper meniscus?
Wiki User
∙ 11y ago
Surface tension will attract the water solution to the molecules of the container thus lifting it up on the edges. Mercury, being much more dense has no such attraction because it is a liquid metal.
Answer:It is due to what is called cohesion and adhesion. The water molecules are attracted to each other through cohesion, which is the attraction between similar particles (by polarity). Adhesion is attraction between unlike molecules. When water is placed in a glass container, the forces of adhesion overcome the forces of cohesion, and the water climbs up the glass.Conversely, the attraction between mercury atoms (cohesion) is stronger than its attraction to the glass (adhesion). Therefore, the atoms pull together and away from the glass.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agoMercury has a convex meniscus because the intermolecular forces between mercury atoms are stronger than those between mercury atoms and glass molecules of a tube. The outermost mercury atoms are attracted to central mercury atoms and go towards the center of the tube. This force of attraction is slightly stronger than the force of gravity on the uppermost mercury molecules, so the meniscus is slightly elevated to a peak and is convex.
Wiki User
∙ 7y agoMeniscus is caused by surface tension. Water is strongly attracted to glass and its meniscus is concave (adhesion). Mercury is more strongly attracted to itself (cohesion) and is convex in meniscus.
Wiki User
∙ 14y agobecause the adhesion of water is greater than the cohesion.
Wiki User
∙ 14y agoIn some liquids the cohesive force dominates over the adhesive force and in others the reverse is the case. hence the proposition.
Wiki User
∙ 11y agoThis depends on the surface tension; each liquid has a specific value.
Wiki User
∙ 7y agoThis depends on surface tension, cohesion and adhesion.
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Law of lower and upper meniscus levels in determining liquid solution?
In measuring liquids using graduated cylinder, there are two things to consider. 1.) CLEAR LIQUID and 2.) COLORED LIQUID (as we may say) In identifying the volume of CLEAR LIQUID (e.g. plain water, oil, alcohol, etc.), THE LOWER MENISCUS is read. For the COLORED LIQUID (e.g. soy sauce, ketchup, etc. ) the upper meniscus is get, since there is only one meniscus there.. (meaning there is no upper & lower meniscus.)
State two types of meniscus shape?
Convex and concave or else they are also known as the upper meniscus and the lower meniscus
Why do we use the lower meniscus to read the clear liquid and upper meniscus to read the colored liquid?
If the colored liquid is opaque (you can't see through it) you can't see the bottom of the meniscus. If the liquid is like mercury, you can't see through it but it doesn't make any difference because the meniscus is reverse from that of water. You read the top.
Which meniscus is to be seen in the burette containing kmno4 solution and why?
upper meniscus...
What is the zero correction and meniscus correction in hydrometer analysis?
· Zero Correction (Fz): If the zero reading in the hydrometer (in the control cylinder) is below the water meniscus, it is (+), if above it is (-), if at the meniscus it is zero.· Meniscus Correction (Fm): Difference between upper level of meniscus and water level of control cylinder.
Law of lower and upper meniscus levels in determining liquid solution?
In measuring liquids using graduated cylinder, there are two things to consider. 1.) CLEAR LIQUID and 2.) COLORED LIQUID (as we may say) In identifying the volume of CLEAR LIQUID (e.g. plain water, oil, alcohol, etc.), THE LOWER MENISCUS is read. For the COLORED LIQUID (e.g. soy sauce, ketchup, etc. ) the upper meniscus is get, since there is only one meniscus there.. (meaning there is no upper & lower meniscus.)
State two types of meniscus shape?
Convex and concave or else they are also known as the upper meniscus and the lower meniscus
What meniscus is being read if you measuring the volume of dark colored liquids?
1.read the bottom of the curve 2. you must read the meniscus at eye level
Why do we use the lower meniscus to read the clear liquid and upper meniscus to read the colored liquid?
If the colored liquid is opaque (you can't see through it) you can't see the bottom of the meniscus. If the liquid is like mercury, you can't see through it but it doesn't make any difference because the meniscus is reverse from that of water. You read the top.
Which meniscus is to be seen in the burette containing kmno4 solution and why?
upper meniscus...
What is the upper surface of a liquid called?
A meniscus.
Why is mercury curved upward?
The meniscus (plural: menisci, from the Greek for "crescent") is the curve in the upper surface of a liquid to the surface of the container or another object. It can be either convex or concave. A convex meniscus occurs when the molecules have a stronger attraction to each other (cohesion) than to the material of the container (adhesion). This may be seen between mercury and glass in barometers and thermometers. Conversely, a concave meniscus occurs when the molecules of the liquid attract those of the container's, causing the surface of the liquid to cave downwards. This can be seen in a glass of water. One can over-fill a glass with mercury and produce a convex meniscus that rises above the top of the glass, due to the vacuum created with the airtight substance.
What is the name given to the curved upper surface of a liquid?
Meniscus
What is the curved upper surface of a liquid called?
A meniscus.
How do you remove the radiator from a 1989 Mercury Marquis?
Remove the upper and lower radiator hoses and transmission lines from the radiator. Remove the fan shroud and the upper and lower bolts. Raise the radiator up and out.
What is the zero correction and meniscus correction in hydrometer analysis?
· Zero Correction (Fz): If the zero reading in the hydrometer (in the control cylinder) is below the water meniscus, it is (+), if above it is (-), if at the meniscus it is zero.· Meniscus Correction (Fm): Difference between upper level of meniscus and water level of control cylinder.
