Design a buffer that has a pH of 7.61 using one of the weak acid/conjugate base systemsshown below.Weak Acid Conjugate BaseКаpkaHC204C2042-6.4×10-54.19H2PO4HPO42-6.2×10-87.21HCO3CO32-4.8×10-1110.32How many grams of the sodium salt of the weak acid must be combined with how manygrams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 Min the weak base?grams sodium salt of weak acid =grams sodium salt of conjugate basegمه=g

To design a buffer with a pH of 7.61, we will use the acid and conjugate base pair that will best…

Answered: Design a buffer that has a pH of 7.61…

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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From the options below, select the three (3) methods that could be used to form a buffer solution: Select 3 correct answer(s) Adding a strong base to a weak acid solution Adding a strong base to a weak base solution Adding a strong acid to a weak acid solution Adding a weak acid (or weak base) to a solution of a salt of that weak acid (or weak base) Adding a weak acid (or weak base) to any salt solution Adding a strong acid to a weak base solution
Design a buffer that has a pH of 4.66 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4 × 10-5 4.19 H2PO4- HPO42- 6.2 × 10-8 7.21 HCO3- CO32- 4.8 × 10-11 10.32 How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base?grams potassium salt of weak acid = grams potassium salt of conjugate base =
What is a buffer? Choose 2. a solution that resists changes in pH a solution that neutralizes a basic solution a weak acid-base conjugate pair a solution that neutralizes an acidic solution a strong acid-base conjugate pair
What is the pH of a buffer that contains 0.356 M H2C6H606 and 0.647 М НС,Н,О6? Ka1 = 7.9 × 10-5 Ka2 = 1.6 x 10-12 IMPORTANT: When entering your answer: • Erter the number only (no units) • Do not leave any spaces • Use a leading zero before the decimal when necessary Report your number to 2 decimal places (regardless of the significant figures) • Correctly round your answer to the 2nd decimal place (allowed margin of error is only + 0.01, so always use un- rounded numbers in your calculations) Examples: 0.12 or 9.87
Pp
Which combination would be preferable to form a buffer? OWeak acid and its conjugate base Weak acid and its conjugate acid Strong acid and a strong base Weak acid and a weak base Strong acid and its conjugate base
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
Which of the following acid/base pairs would not make a good buffer system? H2PO4-/ HPO42- HSO3-/Na2SO3 H2CO3/H2CO2- NH4+/NH3 HNO2/NO2-
which of the following weak acids would be the best to use to make a buffer solution of pH=4.8? which of the following weak acids would be the best to use to make a buffer solution of pH=4.8? a. Acetic acid (Ka=1.75*10^-5) b. Formic acid(Ka=1.8*10^-4) c. Dihyrodgen phosphate(Ka=6.2*10^-8) d. Nitrous acid (Ka=4.5*10^-4)
Which of the following statements are TRUE of buffer solutions? 1. A buffer solution can be made by mixing equal concentrations of acetic acid and sodium acetate. 2. A buffer solution can be made by mixing equal concentrations of hydrochloric acid and sodium chloride. 3. A buffer solution resists changes in pH when small quantities of acid or base are added. O 1 and 2 only O 2 and 3 only O 1 and 3 only All of 1, 2, and 3 O None of these responses åpply.

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