3. Study the Following Substances and Answer the Questions Below. Compound Functional Group pka COH Carboxylic Acid (-COOH) 4.2 Benzoic Acid CH,CHINH, Amine (-NH₂) 36 Ethylamine CH₂SH Thiol (-SH) 9.4 Phenylmethanethiol CH3CH2OH Ethanol Alcohol (-OH) 16 (a) Rank the following substances in order of increasing acidity. (b) Identify which, if any, of the substances in the table is strong enough to react almost completely with NaOH (The pKa of H₂O is 15.74). (c) Which substances will react significantly with sodium bicarbonate (pKa = 6.37)? Draw their reaction mechanism if they will react. 4. What is the pH of a 0.050 M solution of benzoic acid (pKa = 4.2)? Please show the step-by-step computation.
3. Study the Following Substances and Answer the Questions Below. Compound Functional Group pka COH Carboxylic Acid (-COOH) 4.2 Benzoic Acid CH,CHINH, Amine (-NH₂) 36 Ethylamine CH₂SH Thiol (-SH) 9.4 Phenylmethanethiol CH3CH2OH Ethanol Alcohol (-OH) 16 (a) Rank the following substances in order of increasing acidity. (b) Identify which, if any, of the substances in the table is strong enough to react almost completely with NaOH (The pKa of H₂O is 15.74). (c) Which substances will react significantly with sodium bicarbonate (pKa = 6.37)? Draw their reaction mechanism if they will react. 4. What is the pH of a 0.050 M solution of benzoic acid (pKa = 4.2)? Please show the step-by-step computation.
Chapter10: Reconstitution Of Powdered Drugs
Section: Chapter Questions
Problem 5.3P
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Transcribed Image Text:3. Study the Following Substances and Answer the Questions Below.
Compound
Functional Group
pka
COH
Carboxylic Acid (-COOH)
4.2
Benzoic Acid
CH,CHINH,
Amine (-NH₂)
36
Ethylamine
CH₂SH
Thiol (-SH)
9.4
Phenylmethanethiol
CH3CH2OH
Ethanol
Alcohol (-OH)
16
(a) Rank the following substances in order of increasing acidity.
(b) Identify which, if any, of the substances in the table is strong enough to react almost completely
with NaOH (The pKa of H₂O is 15.74).
(c) Which substances will react significantly with sodium bicarbonate (pKa = 6.37)? Draw their reaction
mechanism if they will react.
4. What is the pH of a 0.050 M solution of benzoic acid (pKa = 4.2)? Please show the step-by-step
computation.
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