Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Question
Chapter 2, Problem 68P
Interpretation Introduction
Interpretation:
Whether the carbonic acid/bicarbonate buffer is better at neutralizing excess acid or base and maintains the
Concept Introduction:
Important formulae regarding acid-base concepts are:
Henderson-Hasselbalch equation
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Acetic acid has a pKa of 4.8. How many milliliters of 0.2 M acetic acid and 0.1 M sodium acetate are required to prepare 1 liter of 0.1 M buffer solution having a pH of 4.8?
What is the purpose of phenolphthalein in an acid base titration?
It marks when the moles of acid are equal to the moles of base
It marks when the mL of acid are equal to the mL of base
It acts as a catalyst for the reaction
It turns pink in acid
Answer the following question and show your full solution.
Chapter 2 Solutions
Organic Chemistry
Ch. 2.1 - Which of the following are not acids? CH3COOH CO2...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. 6PCh. 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. 14PCh. 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. 22PCh. 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 - Prob. 27PCh. 2.7 - What is a stronger acid? a. CH3OCH2CH2OH or...Ch. 2.7 - Prob. 29PCh. 2.7 - What is a stronger base?Ch. 2.8 - Fosamax (shown on the previous page) has six...Ch. 2.8 - Which is a stronger acid? Why?Ch. 2.8 - Prob. 34PCh. 2.9 - Using the table of pKa values given in Appendix I,...Ch. 2.10 - Prob. 36PCh. 2.10 - As long as the pH is not less than _______, at...Ch. 2.10 - A naturally occurring amino acid such as alanine...Ch. 2.10 - For each of the following compounds, indicate the...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 - a. Rank the following alcohols from strongest to...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 carboxylic acids from...Ch. 2 - Prob. 51PCh. 2 - For the following compound. a. draw its conjugate...Ch. 2 - Rank the following compounds from strongest to...Ch. 2 - Prob. 54PCh. 2 - Prob. 55PCh. 2 - a. Rank the following alcohols from strongest to...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 - A single bond between two carbons with different...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. 63PCh. 2 - Which is a stronger acid? a. b. c. d.Ch. 2 - Prob. 65PCh. 2 - Given that pH+ pOH = 14 and that the concentration...Ch. 2 - How could you separate a mixture of the following...Ch. 2 - Prob. 68PCh. 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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- What is the K a of an acid whose pK a is 8.60?arrow_forwardHow does the carbonic acid–bicarbonate buffer system play an extremely important role in maintaining pH homeostasis of the blood?arrow_forwardCitric acid, a triprotic acid, has 3 pKa values (3.128, 4.761, and 6.396). What is the pKb of trisodium citrate? 1.34 x 10–11 7.604 10.872 9.239arrow_forward
- Acetic acid buffer system responds to the addition of OH- ions. How would I write the equation showing the response of the acid?arrow_forwardWhat is the purpose of the acetate buffer?arrow_forwardI Based on the pka of acetic acid, what is the effective pH range of a buffer made with acetic acid? Earrow_forward
- 3. The pH of the given solution of lactic acid and lactate is 4.30. Calculate the pKa of lactic acid, when the concentration of lactic acid and lactate are 0.020 M and 0.073 M respectively.arrow_forwardThe pKa of acetic acid, HC2H3O2 is 4.58. A buffer solution was made using an unspecified amount of acetic acid and 0.4 moles of NaC2H3O2 in enough water to make 1.87 liters of solution. It's pH was measured as 3.11. How many moles of HC2H3O2 were used? Report answer with 2 places past the decimal point.arrow_forwardWhy is it beneficial for aspirin to be buffered?arrow_forward
- is propanoic acid less soluble than propanone?arrow_forwardThe dissociation of lactic acid to lactate is shown in the reaction. Lactic acid has a pk, of 3.86. + H* HO OH OH Lactic acid Lactate A solution containing a mixture of lactic acid and lactate was found to have a pH of 3.32. Calculate the ratio of the lactate concentration to the lactic acid concentration in this solution. [lactate] [lactic acid] 0.301 What fraction of the lactic acid/lactate mixture is lactic acid? fraction lactic acid =arrow_forwardExplain why a pKa is not found for the strong acid, but one will be found for the weak acid.arrow_forward
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