ORGANIC CHEM.-S.M.+STD.GDE(LL)-W/ACCESS
8th Edition
ISBN: 9780134777658
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 2.3, Problem 12P
Estimate the pKa values of the following compounds:
a. CH3CH2CH2NH2
b. CH3CH2CH2OH
c. CH3CH2COOH
d. CH3CH2CH2
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Estimate the pKa values of the following compounds: a. CH3CH2CH2NH2 b. CH3CH2CH2OH c. CH3CH2COOH d. CH3CH2CH2NH3
What is the Ksp expression for the following reaction?
Bi2S3(s) ⇄ 2 Bi3+(aq) + 3 S2−(aq)
Group of answer choices
Ksp = [Bi3+]2[S2−]3
Ksp = [Bi3+]2[S2−]3/[Bi2S3]
Ksp = [Bi3+]3[S2−]2
Ksp = [Bi2S3]/[Bi3+][S2−]
Ksp = [Bi3+][S2−]
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Nitric acid (HNO3) is a strong acid that completely ionizes when dissolved in water (pKa = -1.30). Calculate the pH of 10 mg/L HNO3.
a. Unlike nitric acid, butyric acid (CH3CH2CH2COOH) is a weak acid (pKa = 4.8). Calculate the pH of a solution when 90% of the CH3CH2CH2COOH is dissociated.
b. Briefly explain how you can use the pKa values of these two molecules to determine that nitric acid is a strong acid, while butyric acid is a weak acid.
Chapter 2 Solutions
ORGANIC CHEM.-S.M.+STD.GDE(LL)-W/ACCESS
Ch. 2.1 - Which of the following are not acids? CH3COOH CO2...Ch. 2.1 - Consider the following reaction: a. What is the...Ch. 2.1 - Draw the products of the addbase renc1 ion when a....Ch. 2.1 - a. What is the conjugate acid of each or the...Ch. 2.2 - a. Which is a stronger acid: one with a pKa of 5.2...Ch. 2.2 - An acid has a Ka of 4.53 106 in water. What is...Ch. 2.2 - Prob. 7PCh. 2.2 - Antacids are compounds that neutralize stomach...Ch. 2.2 - Are the following body fluids acidic or basic? a....Ch. 2.3 - Draw the conjugate acid of each of the following:...
Ch. 2.3 - a. Write an equation showing CH3OH reacting as an...Ch. 2.3 - Estimate the pKa values of the following...Ch. 2.3 - a. Which is a stronger base: CH3COO or HCOO? (The...Ch. 2.3 - Using the pKa values in Section 2.3, rank the...Ch. 2.4 - Prob. 15PCh. 2.5 - a. For each of the acid-base reactions in Section...Ch. 2.5 - Ethyne has a pKa value of 25, water has a pKa...Ch. 2.5 - Which of the following bases can remove a proton...Ch. 2.5 - Calculate the equilibrium constant for the...Ch. 2.6 - Rank the ions (CH3, NH2, HO, and F) from most...Ch. 2.6 - Rank the carbanions shown in the margin from most...Ch. 2.6 - Which is the stronger acid?Ch. 2.6 - Prob. 23PCh. 2.6 - What reaction in Problem 23 has the smallest...Ch. 2.6 - Rank the halide ions (F, Cl, Br, and l) from...Ch. 2.6 - a. Which is more electronegative, oxygen or...Ch. 2.6 - Which is a stronger acid? a. HCl or HBr b....Ch. 2.6 - a. Which of the halide ions (F, Cl, Br, and l) is...Ch. 2.6 - Which is a stronger base? (The potential maps in...Ch. 2.7 - What is a stronger acid? a. CH3OCH2CH2OH or...Ch. 2.7 - Rank the following compounds from strongest add to...Ch. 2.7 - What is a stronger base?Ch. 2.8 - For each of the following compounds, indicate the...Ch. 2.8 - Prob. 35PCh. 2.8 - Which is a stronger acid? Why?Ch. 2.8 - Fosamax (shown on the previous page) has six...Ch. 2.9 - Using the table of pKa values given in Appendix I,...Ch. 2.10 - For each of the following compounds (here shown in...Ch. 2.10 - As long as the pH is not less than _______, at...Ch. 2.10 - a. Indicate whether a protonated amine (RN+H3)...Ch. 2.10 - A naturally occurring amino acid such as alanine...Ch. 2.10 - a. At what pH is the concentration of a compound,...Ch. 2.10 - For each of the following compounds, indicate the...Ch. 2.10 - Given the data in Problem 47: a. What pH would you...Ch. 2.11 - Write the equation that shows how a buffer made by...Ch. 2.12 - Draw the products of the following react ions. Use...Ch. 2.12 - What product are formed when each of the following...Ch. 2 - Which is a stronger base? a. HS or HO b. CH3O or...Ch. 2 - According to the explanations by Lewis, if a...Ch. 2 - a. Rank the following alcohols from strongest to...Ch. 2 - a. Rank the following carboxylic acids from...Ch. 2 - Prob. 57PCh. 2 - For the following compound. a. draw its conjugate...Ch. 2 - Rank the following compounds from strongest to...Ch. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - a. Rank the following alcohols from strongest to...Ch. 2 - A single bond between two carbons with different...Ch. 2 - For each compound, indicate the atom that is most...Ch. 2 - a. Given the Ka values, estimate the pKa value of...Ch. 2 - Tenormin, a member of the group of drugs known as...Ch. 2 - From which of the following compounds can HO...Ch. 2 - a. For each of the following pairs of reactions,...Ch. 2 - Prob. 69PCh. 2 - Which is a stronger acid? a. b. c. d.Ch. 2 - Prob. 71PCh. 2 - Prob. 72PCh. 2 - Given that pH+ pOH = 14 and that the concentration...Ch. 2 - How could you separate a mixture of the following...Ch. 2 - Prob. 75PCh. 2 - a. If an add with a pKa of 5.3 is in an aqueous...Ch. 2 - Calculate the pH values of the following...Ch. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Which of the reactions in Problem 3 favor...Ch. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Which is the stronger acid? a. ClCH2CH2OH or...Ch. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Which is a more stable base? Remembering that the...Ch. 2 - Which is the Stronger acid?Ch. 2 - Prob. 13PCh. 2 - a. Draw the structure of (CH3COOH (pKa = 4.7) at...
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- Provide a brief explanation, based on features of the molecules, for the following trend in pKa valuesCH3CH2OH > CH3COOH 15.9 4.76arrow_forwardCalculate delt G for a.) CH3NH2(aq) + H2O (l) -> CH3NH3+ (aq) + OH-(aq) T= 25C kp= 4.4x 10-4 b.) Pbl2(s) + Pb2+(aq) +2I-(aq) T= 25C Kp= 8.7x10-9arrow_forwardDetermine the Ka for CH3NH3+ at 25C. The Kb for CH3NH2 is 4.24x10^-4arrow_forward
- Explain why the pKa of compound A is lower than the pKa's of bothcompounds B and C.arrow_forwardMatch each compound with its appropriate pKa value. Q.) Benzoic acid, cyclohexanol, phenol pKa 5 18.0, 9.95, and 4.19arrow_forwardPhenol has a pka of 9.92 and a ρ value of 2.25. From this information, determine the Ka of 3,4- dinitrophenol.arrow_forward
- Phenol has a pka of 9.92 and a ρ value of 2.25. Determine the Ka of 3,4-dinitrophenol.arrow_forwardDetermine the Ka for CH3NH3⁺ at 25°C. The Kb for CH3NH2 is 4.4 × 10-4.arrow_forwardRank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system. I) -CH=CH2 II) -CH3 III) -CH IV) -OH 1) IV > III > I > II 2) IV > I > III > II 3) III > IV > I > II 4) II > I > III > IVarrow_forward
- (b) What is Ka of the 2-hydroxyethylammonium ion, HOCH2CH2NH3+ (pKb of HOCH2CH2CH2NH2 = 4.49)?arrow_forwardWhich group is of lower priority than –CH=CH2 according to Cahn-Ingold-Prelog rules. –CH=C(CH3)2 –C(CH3)3 –CH(CH3)2 –CH=CHCl a b c darrow_forwardMatch each compound with its appropriate pKa value. Q.) 4-Nitrobenzoic acid, 4-nitrophenol, 4-nitrophenylacetic acid pKa 5 7.15, 3.85, and 3.41arrow_forward
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