Question 10 Which of the following statements about buffered solu- tions are true? Select all that apply. A Buffer solutions resist changes in the concentration of hyd roxide ions. A buffer solution may be made up of a strong acid and one of its salts. C Buffer solutions will not change very much if a small amou nt of strong acid is added to it. Buffer solutions will not change pH very much if a small a mount of weak base is added to it.

Question 10 Which of the following statements about buffered solu- tions are true? Select all that apply. A Buffer solutions resist changes in the concentration of hyd roxide ions. A buffer solution may be made up of a strong acid and one of its salts. C Buffer solutions will not change very much if a small amou nt of strong acid is added to it. Buffer solutions will not change pH very much if a small a mount of weak base is added to it.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Which of the following would result in a buffered solution when 1.0 L of each are mixed Question 33 options: 0.2 M of HNO3 and 0.4 M NaNO3 0.2 M of HCHO2 and 0.2 M NaCHO2 0.2 M of HNO3 and 0.4 M NaF 0.2 M of HCHO2 and 0.4 M NaOH 0.2 M of HNO3 and 0.4 M NaOH 0.3 M NH3 and 0.3 M (NH4)3PO4 0.1 M CH3NH2 and ).1 M CH3NH3Cl
Which of the following combinations cannot produce a buffer solution? HNO2 and NaNO2 HCN and NaCN HClO4 and NaClO4 NH3 and (NH4)2SO4 NH3 and NH4Br
Macmillan Learning Select the statements that describe a method which can be used to make a buffer. Partially neutralize a strong acid solution by addition of a strong base. Add appropriate quantities of weak acid and its conjugate base to water. Partially neutralize a weak base solution by addition of a strong acid. Partially neutralize a strong base solution by addition of a strong acid. Partially neutralize a weak acid solution by addition of a strong base. OCT 12 3o) N A
Which of the following solutions can function as a buffer? a solution containing CH3COOH (acetic acid) and CH3COONa a solution containing H2CO3 and NaHCO3 a solution containing NH3 and NH4Cl all of the above
How does a buffer resist change in pH upon addition of a strong base? Question 4 options: The strong base reacts with the weak base in the buffer to form a weak acid, which produces few H+ ions in solution and therefore only a little change in pH. The strong base reacts with the strong acid in the buffer to form a salt which produces few H+ ions in solution and therefore only a little change in pH. The strong base reacts with the weak acid in the buffer to form a weak base, which produces few H+ ions in solution and therefore only a little change in pH. For the acid/base titration of HNO3 and KOH, choose a suitable indicator from the list below. Beside each indicator, the pH range of colour change at its endpoint is provided. Question 5 options: methyl orange (3.1 - 4.4) bromothylmol blue (6.0 - 7.7) thymolphthalein (8.3 - 10.5)
define the buffer capacity. a) buffer capacity is the amount of acid that can be added until all of the acid is used up b) buffer capacity is the amount of base that can be added until all of the base is used up c) buffer capacity is the amount of acid that can be added until all of the base is used up d) buffer capacity is the amount of acid ir base that can be added to a buffer without destroying its effectiveness e) buffer capacity is the amount of base that can be added until all of the acid is used up
Mixing which of the following pairs will make a buffer solution? O CsF, HF O KBr, HBr O Nal, HI RbCl, HC1
For a buffer containing HF (aq) and NaF (aq), what ratio of ([F ]/ [HF]) is needed to give a buffer of pH 2.35? 0.16 O 1.00 0.45 0.80 O 6.31
Which of the following can be mixed together in water to produce a buffer solution? Choose all correct answers, and explain why. HCl and NaCl NH3 and HNO3 HF and NaOH HCN and KCN
Which of the following is not a characteristic of buffer solutions? O They cannot be tailored to maintain a specified pH. O They contain a conjugate base of a weak acid. O They contain a weak acid. O They have a finite capacity for accommodating added acid or base. O They can maintaln their pH, even when small amounts of acid or base are added. QUESTION 10 The capacity of a buffer solution is greater when there are large amounts of a weak acid and its conjugate base in solution. O True O False
1. Which one of the following combinations cannot function as a buffer solution? A) HCN and KCN D) HF and NaF B) NH3 and (NH4)2SO4 E) HNO, and NANO2 C) HNO3 and NaNO3
Which of the following acid/base pairs can be used to prepare a buffer? a) NaH2PO4/NaHCO3b) HCl/NaOHc) NH4+/NH3d) HNO3/NaNO3