0
A certain pain reliever was analyzed for aspirin by dissolving 250 mg of the tablet in water and titrating with .0300M KOH Titration required 29.40 mL of base What is percentage by weight of aspirin?
Wiki User
∙ 11y ago
HC9H7O4+KOH--> [C9H7O4]-K+ +H2O
moles of KOH= 0.300mol/L x 0.0294L
=8.82x10^-4 mol KOH
1 mole of KOH=1 mole of HC9H7O4
moles of HC9H7O4= 8.82x10^-4 mol
mass of aspirin= 8.82x10^-4 mol x 180.09 g/mol
= 0.15884 g
250mg=0.25g
%weight= (weight of solute/weight of sample) x 100%
= ( 0.15884g/0.25g) x 100%
=63.54% of aspirin
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What is titrant and analyte?
Analyte: the substance to be analyzed by titration. Titrant: the substance (with a known concentration) added to the analyte solution to perform a titration.
Which type of titration is better volumetric or conductometric?
A rule don't exist; this depends on the choice of titrant, desired accuracy, price, solution to be analyzed, instruments and glassware in laboratory, etc.
When an acid is analyzed by adding a measured quantity of base the point at which all the acid has reacted is called?
Neutralization point, point of equivalency, is in (volumetric) titration best approached by the endpoint or indication point.
Can you please give examples of chemistry investigatory project I need it for my project in chemistry?
Prepare a sample of tetraamine copper (II) sulfate. (Despite the name it's very easy to produce). Analyze the percent by mass of copper ion, sulfate and ammonia in your compound. Very easy and impressive experiment if you have access to some standard lab equipment. Copper is analyzed by titration, sulfate is precipitated out with barium (II) chloride and measured using simple stoichiometry, ammonia is analyzed by back titration. Feel free to message me if you have any questions.
What is the acceptable percentage for margin of error in social research?
It is + and - 5 %. To draw any conclusion the observations should be made very critically and analyzed statistically.
Can you buy soil that is already analyzed?
I think it is impossible to buy soil that is analyzed. otherwise analyzed soil may be very exspensive. I think so
What is a synonym for scrutinized?
An alternative word for scrutinized could be examined, inspected, or analyzed.
Why you do acid digestion for metal testing?
Acid digestion is necessary to dissolve metal samples for analysis. Most lab chemistry involves dissolving a salt with water or organic material with solvent to obtain a known volume solution for chemical analysis. Metals will not dissolve in water or organic solvents, therefore acid digestion is a method of dissolving the metal into solution, which can then be analyzed by laboratory methods to determine the amount of metal or element present. Acid digestion is simply adding acid to the metal sample and heating until it appears the solid metal has fully dissolved. This sample can then be diluted down with an acid/water mixture and analyzed against an acid/water background solution for comparison.
What is analyzed by its features?
An object
What exactly if the definition of the word analyzed?
To have analyzed something means that you have examined it methodically and thoroughly, typically to gain information about its structure or details. After you have analyzed something, you should have a greater knowledge of the facts you can readily glean from its contemplation.
How is hair analyzed?
the gay way!
What are the release dates for Human Movements Analyzed - 1915?
Human Movements Analyzed - 1915 was released on: USA: 6 November 1915
