How do you read a meniscus reading?
A meniscus occurs because of surface tension in the liquid and must be read at eye level. For a concave meniscus, the correct volume will be read at the bottom of the curve. For a convex meniscus, the opposite is true and the correct reading will be at the top of the curve.
How do you read a meniscus measuring cylinder?
To correctly read a graduated cylinder, the surface at the center of the meniscus must be read, not the top of the ring of liquid clinging to the wall of the graduated cylinder. For most liquids, this "center" will be the lowest point of the meniscus.
Is volume read from the top or bottom of the meniscus?
The Meniscus 1. When observing a volume of a liquid in a graduated cylinder, graduated pipette, or buret, read the point on the graduated scale that coincides with the bottom of the curved surface of the liquid. The curved surface of the liquid is called the meniscus.
Why do you 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.
How do you read the colorless and colored meniscus?
During lab experiments especially in chemistry, we are always told to take a reading at bottom of the meniscus for colourless liquids and the upper meniscus of coloured liquids.
Do you read a buret from top to bottom?
Refer to Figure 1 and note the correct way to read the liquid level in a buret (from the top down). Before use, a buret should always be cleaned and prerinsed with the solution to be delivered. Do NOT attempt to fill a buret precisely to the 0.00-mL mark at the top.
What part of the meniscus do you read?
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.
What happens if you read the meniscus below eye level?
0:050:32Read Meniscus at Eye Level – YouTubeYouTube
Why do we need to read the lower meniscus and not the upper 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.
When reading a graduated cylinder should you read the meniscus?
The liquid will tend to curve downward. This curve is called the meniscus. Always read the measurement at the bottom of the meniscus.
What happens if you read a meniscus above eye level?
0:000:32Read Meniscus at Eye Level – YouTubeYouTube
What is the correct way of reading or using the burette?
In order to measure the amount of solution added in or drained out, the burette must be observed at eye level straight to the bottom of the meniscus. The liquid in the burette should be completely free of bubbles to ensure accurate measurements.
What is correct method of getting a burette reading?
Answer: When the liquid is filled inside the burette,the uppermost layer of that liquid forms a concave surface and for getting a correct reading we should measure the lower tip of that concave upper surface and we should avoid the upper surface of that concave ,in order to avoid measurement mistakes.
Where do you read the level of water on a meniscus?
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.
Where do you read the 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.
What is the best practice for reading volume from a burette?
When reading volume from a burette, what is a best practice? Estimate the last decimal place. Read the bottom of the meniscus.
How do you read a buret initial and final reading?
0:021:01How to Read a Buret in Chemistry – YouTubeYouTube