Concept explainers
(a)
Interpretation: The
Concept introduction:
Mixture of acid and base undergoes equilibrium reaction and it’s
Weak acids are more stable and less reactive, so equilibrium follows the direction of formation weak acids in a reaction.
Lesser the
(b)
Interpretation: The
Concept introduction:
Mixture of acid and base undergoes equilibrium reaction and it’s
Weak acids are more stable and less reactive, so equilibrium follows the direction of formation weak acids in a reaction.
Lesser the
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Essential Organic Chemistry (3rd Edition)
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- Consider the following compounds that vary from nearly nonacidic to strongly acidic. Draw the conjugate bases of these compounds, and explain why the acidity increases so dramatically with substitution by nitro groups.CH4 CH3NO2 CH2(NO2)2 CH(NO2)3 pKa ≅ 50 pKa = 10.2 pKa = 3.6 pKa = 0.17arrow_forwardIn each of the following reactions, one of the reagents contains two reactive groups (either acidic or basic). You have to decide which group will be affected under mentioned conditions. To answer this problem correctly I suggest that you use the following strategy: (i) Write the products of the reaction: conjugate acid and conjugate base. Use curved arrows to track the flow of electrons; (ii) Using Table 3.1 of the textbook estimate and write pKa values for all acidic groups you have in the reaction equation including conjugate acid; (iii) If you wrote the correct reaction the estimated pKa values should confirm that the reaction transformation changes stronger acid to weaker acid and stronger base to weaker.arrow_forwardThe Ka of acetic acid (CH3CO2H) is 1.8x10-5 and the Kb of methylamine (CH3NH2) is 4.4x10-4. Complete the following equilibrium reaction (acid-base reaction) equation and predict the side of the equilibrium that is favored. Explain. Show all your work.arrow_forward
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- Phthalic acid and isophthalic acid have protons on two carboxy groups that can be removed with base. (a) Explain why the pKa for loss of the rst proton (pKa1) is lower for phthalic acid than isophthalic acid. (b) Explain why the pKa for loss of the second proton (pKa2) is higher for phthalic acid than isophthalic acid.arrow_forwardExperimental observations show that thiocyanate (SCN- ), the conjugate base of thiocyanic acid (pKa = 1.1 at 25 °C), is quite soluble in neutral water at pH > 2. In the space provided below, explain this experimental observation. That is, why does SCN– readily dissolve in water when the pH > 2?arrow_forwardIn step 1, where did you get the value of -2.303?arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningEBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT