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Consider an acetate buffer system made up of acetic acid and sodium acetate, initially at the same pH as its pka (4.76). When small amount of base is added to this buffer which of the following reactions is most likely to occur which will prevent increase in pH of the buffer? O a. CH3COOH + N2OH - CH3C00+ H20 Ob. None of the above OC CH3CO0" + HCI CH3COOH + Cr Od CHạCO0 + NAOH - CH3COOH + Na* Oe. CH3COOH + HCI - CH3CO0 + H20

Consider an acetate buffer system made up of acetic acid and sodium acetate, initially at the same pH as its pka (4.76). When small amount of base is added to this buffer which of the following reactions is most likely to occur which will prevent increase in pH of the buffer? O a. CH3COOH + N2OH - CH3C00+ H20 Ob. None of the above OC CH3CO0" + HCI CH3COOH + Cr Od CHạCO0 + NAOH - CH3COOH + Na* Oe. CH3COOH + HCI - CH3CO0 + H20

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 108QRT
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Question 5
Remaining Time: 1 hour, 19 minutes, 11 seconds. Question Completion Status: 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 2 3 4 6 8 6. 10 12 QUESTION 5 Consider an acetate buffer system made up of acetic acid and sodium acetate, initially at the same pH as its pka (4.76). When small amount of base is added to this buffer which of the following reactions is most likely to occur which will prevent increase in pH of the buffer? O a. CH3COOH + N2OH - CH3CO0 + H20 O b. None of the above OC CH3CO0 + HCI CH3COOH + Cr Od. CH3CO0 + NaOH - CH3COOH + Na* O e. CH3COOH + HCI е. CH3CO0 + H20 QUESTION 6 Which of the following statements about buffers is (are) true? (a) the pH of a buffered solution remains unchanged no matter how much acid or base is added to the solution. O (b) the strongest buffers are made up of strong acids and strong bases (c) a buffer composed of a weak acid of pKa = 5 is a better buffer at pH 4 than at pH 6.00 O (d) when pH = pKa, the weak acid and conjugate base concentrations in a buffer are equal O (e) both (b) and (d) QUESTION 7 Which of the following molecules cannot exhibit intermolecular (among themselves) hydrogen bonding? O ammonia O hydrogen sulfide O flourine gas Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All AnS
Transcribed Image Text:Remaining Time: 1 hour, 19 minutes, 11 seconds. Question Completion Status: 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 2 3 4 6 8 6. 10 12 QUESTION 5 Consider an acetate buffer system made up of acetic acid and sodium acetate, initially at the same pH as its pka (4.76). When small amount of base is added to this buffer which of the following reactions is most likely to occur which will prevent increase in pH of the buffer? O a. CH3COOH + N2OH - CH3CO0 + H20 O b. None of the above OC CH3CO0 + HCI CH3COOH + Cr Od. CH3CO0 + NaOH - CH3COOH + Na* O e. CH3COOH + HCI е. CH3CO0 + H20 QUESTION 6 Which of the following statements about buffers is (are) true? (a) the pH of a buffered solution remains unchanged no matter how much acid or base is added to the solution. O (b) the strongest buffers are made up of strong acids and strong bases (c) a buffer composed of a weak acid of pKa = 5 is a better buffer at pH 4 than at pH 6.00 O (d) when pH = pKa, the weak acid and conjugate base concentrations in a buffer are equal O (e) both (b) and (d) QUESTION 7 Which of the following molecules cannot exhibit intermolecular (among themselves) hydrogen bonding? O ammonia O hydrogen sulfide O flourine gas Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All AnS
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