Q. In a chemical reaction 2.05 g of salicylic acid was reacted with 5.0 mL of acetic anhydride inpresence of a catalytic amount (6 drops) of 85% phosphoric acid. What would be the theoreticalyield of Aspirin?

Mass of salicylic acid = 2.05 g Volume of acetic anhydride = 5.0 mL Theoretical yield of aspirin =…

Answered: Q. In a chemical reaction 2.05 g of…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter15: Acid–base Equilibria

Section: Chapter Questions

Problem 7P

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Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the formula KHC8H4O4. This is often written in the short-hand notation as KHP. If 25.0mL of a potassium hydroxide solution are needed to neutralize 2.26g of KHP, what is the molarity of the potassium hydroxide solution? Potassium hydrogen phthalate sometimes called potassium biphthalate, as shown on this bottle is an acid that is convenient to store and use because it is a solid.
Chem. Act. 1.1) A volume of 33.0ml of 1.0 M Hydrochloric acid (HCl) neutralizes a 28.0ml sample of KOH solution . What is the concentration of Potasium hydroxide (KOH)? HCl + KOH → KCl + H2O
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1.) A 0.4040-g sample of potassium hydrogen phthalate, KHC8H4O4 (molar mass = 204.44 g/mol) is dissolved with 50 mL of deionized water in a 125-mL Erlenmeyer flask. The sample is titrated to the phenolphthalein endpoint with 14.71 mL of a sodium hydroxide solution. What is the molar concentration of the NaOH solution?
The student weighs out 0.18 g of a diprotic unknown acid and dissolves it in approximately 50 mL of water. She adds a few drops of phenolphthalein and titrates the acid sample with the NaOH solution she standardized in question 2. She determines that 21.50 mL are required to reach the end point. 3. a. What is the molar mass of the acid?
. Lets pretend for a moment that you’re now working as an analyst working for the policedepartment. You are asked to analyze a white powder confiscated from a suspect. The complainantclaimed that the powder was used by the suspect to slowly poison the victim. Suppose the suspectclaimed it is only sodium chloride, how would you analyze the material to confirm that is indeed NaCl.Outline the qualitative test that must be done and provide inference for each test.(NOTE: Make sure analysis is in logical order backed up with chemical reactions if possible because youwill present it during the court hearing)An honest MISTAKE in the analysis can be a reason why innocent person will suffer in jail or a trueblooded murderer will escape the case.
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(1) Careless Carlie weighed her KHP sample, but forgot to bring her report sheet along, so she recorded the mass of KHP on a paper towel. During her titration, which required 18.46 mL of base, she spilled some base on her hands. She remembered to wash her hands, but forgot about the data on the towel, and used it to dry her hands. When she went to calculate the molarity of the base, Carlie discovered that she didn’t have the mass of her KHP. Her kindhearted instructor told Carlie that her base was 0.2987 M. Calculate the mass of Carlie’s KHP sample. Show calculations (2) What mass of solid NaOH would be needed to make 645 mL of Carlie’s NaOH solution? Show calculations.
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Q. In a chemical reaction 2.05 g of salicylic acid was reacted with 5.0 mL of acetic anhydride in presence of a catalytic amount (6 drops) of 85% phosphoric acid. What would be the theoretical yield of Aspirin?