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Weak diprotic acid H2A is titrated with 0.2000 M NaOH. The initial concentration of H2A is 0.1000 M and the initial volume is 50.00 mL. Ka1 = 1.0 x 10?5 Ka2 = 1.0 x 10?9 a) Identify the predominate species at the first equivalence point, by chemical formula: b) Calculate the pH of the solution before any base is added. c) Calculate the pH at the first equivalence point. d) How many mL base, total, must be added to achieve the 2nd equivalence point? e) Calculate the pH at the second equivalence point. f) ) From the attached table of acid/base indicator transition ranges (bottom half of p.7), identify an appropriate indicator for: i) the 1st equivalence point ii) the 2nd equivalence point:
250 milligrams of butyric acid (CH3CH2CH2COOH) and 5 mL of ethanol (CH3CH2OH) were combined with conc sulfuric acid. What is the theoretical yield (in milligrams) of the ester product (CH3CH2CH2COOCH2CH3)?
Amides undergo hydrolysis to carboxylic acids on treatment with alkali. Diagram a suitable mechanism for the conversion of benzamide to benzoic acid
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What is the pH of the solution at the equivalence point for the titration of 100 mL of a .786 M HCO2H solution with a .786 M Solution of sodium Hydroxide? Formic acid has a Ka=1.80*10^-4
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A 0.15 M solution of chloroacetic acid has a pH of 1.86. What is the value of Ka for this acid?
Which of the following statements are true regarding the liquid-liquid extraction performed in the synthesis of phenacetin. Note that there may be more than one correct answer. Dichloromethane is the bottom layer because it is more dense than water..
What mass of calcium metal could be obtained from one kg of limestone that is 50.0% pure CaCO3?
If the groundwater at the top of the saturated zone is in equilibrium with air, calculate the concentration of m-Xylene in the air in mol/L
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