The active ingredient in aspirin is acetylsalicylic acid. A 2.51-g sample of acetylsalicylic acid required 27.36 mL of 0.5106 M NaOH for complete reaction. Addition of 15.44 mL of 0.4524 M HCl to the flask containing the aspirin and the sodium hydroxide produced a mixture with pH = 3.48. Find the molar mass of acetylsalicylic acid and its Ka value. Acetylsalicylic acid is a monoprotic acid.
Answer to relevant QuestionsConsider the following two acids: pKa1 = 2.98; pKa2 = 13.40 HO2CCH2CH2CH2CH2CO2H Adipic acid pKa1 = 4.41; pKa2 = 5.28 In two separate experiments, the pH was measured during the titration of 5.00 mmol of each acid with 0.200 ...What volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to achieve a pH of 8.00? Write balanced equations that describe the following reactions. a. The dissociation of perchloric acid in water. b. The dissociation of propanoic acid (CH3CH2CO2H) in water. c. The dissociation of ammonium ion in water. You may need Table to answer the following questions. a. Which is the stronger base, Cl2 or H2O? b. Which is the stronger base, H2O or NO2-? c. Which is the stronger base, CN2 or OC6H5-? Table Using Table, order the following bases from strongest to weakest. NO3-, H2O, NH3, and C5H5N Table
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