Concept explainers
Interpretation:
Acid-base reactions are to be written, and the stronger base and weaker base, and the weaker acid using
Concept Introduction:
The value of
For any reaction, equilibria are favored to that side of the reaction which has the lowest energy. This doubtlessly reflects the fact that acid-base reactions will go to the side of weak acids and bases.
The strength of an acid is generally described in terms of acidity constant
A large value of
The value of
The higher is the dissolution constant, i.e., the reagent can produce more ions when dissolved in water, the stronger is the acid. Thus, by the above relation, strong acids have low
The stronger the acid, the weaker is its conjugate base.
Larger the value of
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ORGANIC CHEM. VOL.1+2-W/WILEYPLUS
- For the following acid-base reaction, (1) predict the products, showing both reactants and products complete Lewis structures and arrows showing electron flow; (2) label each structure with the lowing: Bronsted acid, Bronsted base, conjugate acid, conjugate base; (3) give a brief definition of a ronsted acid and Bronsted base; (4) predict the direction of the equilibrium and justify your answer. HC0OH + CH3 Nta PRん106Y pkb = 3.36arrow_forwardRank the Acidity of the following sets of compounds. Give an explanation for the answers.arrow_forwardConsider the following reaction: (a) What is the acid on the left side of the equation? (b) What is the base on the left side of the equation? (c) What is the conjugate base of the acid on the left? (d) What is the conjugate acid of the base on the left? (e) What is the acid on the right side of the equation? (f) What is the base on the right side of the equation? (g) What is the conjugate base of the acid on the right? (h) What is the conjugate acid of the base on the right?arrow_forward
- Benzoic acid (C6H5COOH) and aniline (C6H5NH2) areboth derivatives of benzene. Benzoic acid is an acid withKa = 6.3 x10-5 and aniline is a base with Ka = 4.3 x10-10. (a) What are the conjugate base of benzoic acid andthe conjugate acid of aniline? (b) Anilinium chloride(C6H5NH3Cl) is a strong electrolyte that dissociates intoanilinium ions (C6H5NH3+) and chloride ions. Which willbe more acidic, a 0.10 M solution of benzoic acid or a 0.10M solution of anilinium chloride? (c) What is the value ofthe equilibrium constant for the following equilibrium?C6H5COOH(aq) + C6H5NH2(aq) ⇌ C6H5COO-(aq) + C6H5NH3+(aq)arrow_forwardно HO но он The pK, of ascorbic acid (vitamin C) is 4.17, showing that it is slightly more acidic than acetic acid (CH3CO0H, pKa 4.74). (a) Show the fou r different conjugate bases that would be formed by deprotonation of the four different OH groups in ascorbic acid. (b) Compare the stabilities of these four conjugate bases, and predict which OH group of ascorbic acid is the most acidic. (c) Compare the most stable conjugate base of ascorbic acid with the conjugate base of acetic acid, and suggest why these two compounds have similar acidities, even though ascorbic acid lacks the carboxylic acid (COOH) group.arrow_forwardThe pH of a 0.12 M solution of acetic acid (HCH3CO2) is measured to be 2.83. Calculate the acid dissociation contant Ka of acetic acid.arrow_forward
- Consider cyclohexane and benzene (draw the structures below). Draw the conjugate base of each molecule and then explain why cyclohexane is the weaker acid.arrow_forward5. (a) HF is an acid. What is it's conjugate base ? (b) CIO₂ is a base. What is it's conjugate acid ? (c) What is the conjugate base of H₂PO4¹ ? (d) What is the conjugate acid of H₂PO4-¹ ?arrow_forwardProvide the bond line structures of two acids, one whose conjugate base is resonance stabilized and one which is not. Explain the effect that resonance will have on acidity.arrow_forward
- Would CH3NH3C2H3O2 (salt) be neutral, basic, acidic or cannot be determined?arrow_forwardWhich will be the stronger acid: propene (CH2=CHCH3) or propane (C3H8)? Explain by using resonance Lewis structures.arrow_forward(a) Rank the following compounds in order of increasing acidity. (b) Which compound forms the strongest conjugate base?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning