What is the meniscus of a burette?
You must be at eye level with the bottom of the meniscus (curved surface of liquid) to read the burette. Reading from above or below the meniscus will result in a parallax error. In order to better read the meniscus, keep a dark piece of paper behind the buret.
Does a buret have a meniscus?
You will note the liquid surface in the buret is curved. This surface is called the meniscus. Normally you will read the bottom of the curved surface as the volume reading.
Where should the meniscus be read when viewing the volume of a solution in a buret or pipet )?
To read this volume exactly, the bottom of the curved surface of the liquid, the meniscus, should be located at the scribed line for the desired volume.
Which meniscus is read in the burette with HCL solution?
The lower meniscus must be read while measuring the volume of colourless or transparent liquids but the upper meniscus while using colured ones because the phase boundary in the colourless liquid is clearly visible so it is easy to read it.
What is meniscus?
The meniscus is a C-shaped piece of tough, rubbery cartilage that acts as a shock absorber between your shinbone and thighbone. It can be torn if you suddenly twist your knee while bearing weight on it.
Why do we read lower meniscus?
Answer. Answer: The lower meniscus must be read while measuring the volume of colourless or transparent liquids but the upper meniscus while using colured ones because the phase boundary in the colourless liquid is clearly visible so it is easy to read it.
How do you read a meniscus?
The key to getting an accurate reading, is to measure the center of the meniscus whether it be concave or convex. E.g. with a concave meniscus, measure the bottom of the meniscus and for convex meniscus, take the reading from the top of the meniscus.
Why do we read the bottom of the meniscus?
The location of the mark on the glass is where the bottom of the meniscus should be in order to have the “true” volume be what’s marked. So by measuring from the bottom of the meniscus, you’re synchronizing your measurement procedure with the procedure of the people who originally calibrated the markings on the glass.
What is meniscus in titration?
The meniscus is the curve seen at the top of a liquid in response to its container. The meniscus can be either concave or convex, depending on the surface tension of the liquid and its adhesion to the wall of the container.
Why is meniscus important?
The meniscus plays a vital role in maintaining the stability of the knee joint along with optimizing the tibiofemoral load transfer and distribution. This also helps in preserving the health of the articular cartilage.
What is meniscus reading?
Reading a Meniscus For a concave meniscus, the volume of the liquid in the container is read from the bottom of the curve. You may notice a ‘line’ of liquid at the very top, forming the curve itself. The bottom of the curve is the lower side of this line.
What is upper and lower meniscus in burette?
When colourless solutions like water are filled in a burette, it forms a concave meniscus. So, obviously we may read the lower meniscus. But when coloured solutions like mercury are filled in a burette, it forms a convex meniscus, then we may read the upper meniscus.
What is meniscus measurement?
A concave surface of a liquid resulting from surface tension. The bottom of the meniscus is used to measure the volume of a liquid in apparatus such as a graduated cylinder.
How do you read a meniscus sample?
Measure so that the line you are reading is even with the center of the meniscus. For water and most liquids, this is the bottom of the meniscus. For mercury, take the measurement from the top of the meniscus. In either case, you are measuring based on the center of the meniscus.
Why is a meniscus important?
What is meniscus in chemistry?
A meniscus is a curve in the surface of a molecular substance (water, of course) when it touches another material. With water, you can think of it as when water sticks to the inside of a glass.