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What else can I help you with?
Why must the stem of the funnel touch the inside surface of the collecting beaker during filtration?
Ensuring the stem of the funnel touches the inside surface of the collecting beaker helps to prevent splashing or spillage of the liquid being filtered. It also helps to direct the filtered liquid smoothly into the beaker, minimizing the risk of contamination or loss of sample during the filtration process.
What are erlenmeyer flasks and florence flasks used for?
See the two Related Questions to the left for a description of each one. They are different in both shape and function.Florence flasks have round bottoms and no gradations indicating volume. Erlenmeyer flasks are conical in shape and have gradations depicting volume on the side.
Why is it better to dissolve the solid in the water in a polystyrene cup rather than in a beaker?
Dissolving the solid in a polystyrene cup is better than using a beaker because polystyrene provides better thermal insulation, minimizing heat exchange with the environment. This helps maintain a more consistent temperature during the dissolving process, allowing for more accurate measurements of temperature changes. Additionally, the cup's design often allows for easier handling and mixing of the solution.
Is acid what is present in a solution at the equivalent point of a titration?
At the equivalence point of a titration, the amount of acid and base present in the solution is stoichiometrically equivalent, meaning they have completely reacted with each other. Therefore, at this point, the solution typically contains the products of the acid-base reaction rather than excess acid or base. Depending on the specific titration, the solution may contain a salt and water, and the pH will vary based on the strengths of the acid and base involved.
When you use titration method with EDTA for Ca the result equals 4 ppm Ca but when you use flame photometer method for same sample the result equals 2 ppm Ca What is the reason?
Maybe the molar ratio of Ca to EDTA at equivalent titration is miscalculated: Not 2 Ca reacts with 1 EDTA (= tetra-acetate) but it is an equi-molar reaction: 1 Ca reacts with 1 EDTA.Not Ca2Edetate is formed, but rather CaH2Edetate (monocalcium dihydrogen ED-tetra acetate)If so the EDTA analysis outcome will be halved, so I would more trust on the FPM-outcome 2 ppmIf not, then I really don't know. Try a recalculation, succes.
Why is a back titration sometimes used for an analysis rather than a direct titration?
Back titrations are used when a reaction occurring in the conical flask can not be detected using an indicator such as phenolphthalein. So, after this titration has been performed, the 'excess' is then titrated with something that can be detected more easily using phenolphthalein etc.
If you place iodine in a beaker of H2O will it float?
Iodine is denser than water, so it will sink in a beaker of water rather than float.
Why must the stem of the funnel touch the inside surface of the collecting beaker during filtration?
Ensuring the stem of the funnel touches the inside surface of the collecting beaker helps to prevent splashing or spillage of the liquid being filtered. It also helps to direct the filtered liquid smoothly into the beaker, minimizing the risk of contamination or loss of sample during the filtration process.
What are erlenmeyer flasks and florence flasks used for?
See the two Related Questions to the left for a description of each one. They are different in both shape and function.Florence flasks have round bottoms and no gradations indicating volume. Erlenmeyer flasks are conical in shape and have gradations depicting volume on the side.
Why must the stem of the funnel touches the inside surface of the collecting beaker during the filtration?
it's done to minimize the mixing of air into the filtered solution. By touching the stem to the collecting beaker, the solution flows into the beaker smoothly rather than splashing into it.
Why is it better to use white vinegar rather than balsamic or apple cider vinegar for the titration?
White vinegar is better for titration because it has a consistent and predictable acetic acid concentration, typically around 5%, making it easier to obtain accurate measurements. In contrast, balsamic and apple cider vinegars can have varying acidity levels and additional flavor compounds that may interfere with the titration process. This consistency in white vinegar allows for more reliable calculations of concentration and pH.
How do you describe the beaker?
A beaker is a cylindrical glass container with a flat bottom and a pouring lip. It is used in laboratories for measuring, mixing, and heating liquids. Beakers come in various sizes and are commonly marked with volume graduations.
What is the control variable in a titration lab?
The control variable in a titration lab is the volume and concentration of the titrant solution being used. Keeping these variables constant ensures that any changes observed in the reaction are due to the titrated solution being analyzed, rather than variations in the titrant solution.
Why cant the markings on conical flasks and beakers be used to correctly measure out volumes?
The characteristic of the attraction between water and glass (hydrophilia?) and the water's surface tension causes some of the water at the edges of the surface to partially climb the inside of the container, making it difficult to determine from the side where the water level actually is.
Is titration of thiosulfate is a direct or indirect iodine titration?
Indirect http://books.google.co.uk/books?id=wxMrnl9Hy0AC&pg=PA131&lpg=PA131&dq=iodine+indicator+in+alkaline+environment&source=web&ots=wGSsDuMEy3&sig=TasdtQD2-vRoFyq7pKt4-VeQ7wk&hl=en&sa=X&oi=book_result&resnum=8&ct=result#PPA130,M1
Why is it better to dissolve the solid in the water in a polystyrene cup rather than in a beaker?
Dissolving the solid in a polystyrene cup is better than using a beaker because polystyrene provides better thermal insulation, minimizing heat exchange with the environment. This helps maintain a more consistent temperature during the dissolving process, allowing for more accurate measurements of temperature changes. Additionally, the cup's design often allows for easier handling and mixing of the solution.
Do Liam and Carmen like each other in Tracy beaker returns?
In "Tracy Beaker Returns," Liam and Carmen do not have a romantic relationship. Their friendship is focused on supporting each other and being there for one another, rather than romantic feelings.
