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Chapter 19 Solutions
ORGANIC CHEM.(LL)W/STD GDE.+CONNECT PKG
- Acid-Base Equilibria Many factors contribute to the acidity of organic compounds. Electronegativity, resonance, induction, hybridization, aromaticity, and atomic size, all play a role. In the following comparisons, you are asked to identify the factor(s) that would be most important to analyze when predicting relative acidity, and then to predict the trend in acidity and pKa values. For each of the following pairs of compounds answer the following two multiple-choice questions. 1. What factor(s) are the most important to consider when predicting the relative acidity of the two compounds? a. Electronegativity of the atom possessing the hydrogen. b. Resonance stabilization of the anionic conjugate base. c. Inductive stabilization of the anionic conjugate base. d. Hybridization of the atom possessing the hydrogen. e. The atomic size of the atom possessing the hydrogen.arrow_forwardFind the value of Kb for the conjugate base of the following organic acids. (a) picric acid used in the manufacture of explosives; Ka = 0.16 (b) trichloroacetic acid used in the treatment of warts; Ka = 0.20arrow_forwardWill acetylene react with sodium hydride according to the following equation to form a salt and hydrogen, H2? Using pKa values given in Table 4.1, calculate Keq for this equilibrium.arrow_forward
- Write a net ionic equation to show that piperidine, C5H11N, behaves as a Bronsted-Lowry base in water. BL base BL acid BL acid BL base + H2O +arrow_forwardGive the formula of the conjugate acide of H2O ?arrow_forwardEstimate the pH and percentage of dissociation of 0.010 M CH3CH(OH)COOH(aq) (lactic acid). pKa of lactic acid is 3.86.arrow_forward
- What is the conjugate base of [Fe (H2O)6]^3+ (aq) ?arrow_forwardBenozic acid (C6H5COOH) has a pKa of 4.20. What is the ratio of the acid to its conjugate acid at a pH of 2.20 and what is the formula of the conjugate acid?arrow_forwardWhy do HCl, HNO3 etc. show acidic characters in aqueous solution while solutions of compounds like alcohol and glucose do not show acidic character?arrow_forward
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