Select any systems that could be used to buffer a solution at a pH of 6. Mark all appropriate answers. O NH4 NH3 Ka-5.6 x 10 10 O HCO37C032 Ka-4.8 x 10-11 O CgHsCOOH/CgHgCOO Ka=6.46 x 105 O HSO4 7SO,2- O H2COgHCO3 Kg=1.02 x 10-7 K4.3 x 107 O HFIF K 7.2 x 10
Select any systems that could be used to buffer a solution at a pH of 6. Mark all appropriate answers. O NH4 NH3 Ka-5.6 x 10 10 O HCO37C032 Ka-4.8 x 10-11 O CgHsCOOH/CgHgCOO Ka=6.46 x 105 O HSO4 7SO,2- O H2COgHCO3 Kg=1.02 x 10-7 K4.3 x 107 O HFIF K 7.2 x 10
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter13: Acids And Bases
Section: Chapter Questions
Problem 191MP
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QUESTION 6
Select any systems that could be used to buffer a solution at a pH of 6. Mark all appropriate answers.
O NH4NH3
Ka-5.6 x 10-10
O HCO37CO32
K=4.8 x 10-11
O CgHsCOOH/CgHgCOO Ka=6.46 x 10-5
O HSO47SO,2-
Ka=1.02 x 10-7
O H2CO3/HCO3
K4.3 x 107
O HFIF K= 7.2 x 104
QUESTION 7
What would the base/acid ratio be for the CH3COOH I CH3C00" system in order to create a pH 5.7? Round to two decimal places.
QUESTION 8
6.
How many grams of NH4CI must be added to 0.100 L of 0.445 M NH3 to produce a buffer solution with pH= 9.37 ? pKa (NH¼CI) = 9.24
Units are not required on the answer. Round your answer to two decimal places.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3c46e66a-ed8b-4158-949b-36fba10ee611%2F68f221e7-e01b-4c2c-97f1-b37d8e4cea1f%2Fqp5b1p6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:www.riverbe
* Question Completion Status:
East Alton M
QUESTION 6
Select any systems that could be used to buffer a solution at a pH of 6. Mark all appropriate answers.
O NH4NH3
Ka-5.6 x 10-10
O HCO37CO32
K=4.8 x 10-11
O CgHsCOOH/CgHgCOO Ka=6.46 x 10-5
O HSO47SO,2-
Ka=1.02 x 10-7
O H2CO3/HCO3
K4.3 x 107
O HFIF K= 7.2 x 104
QUESTION 7
What would the base/acid ratio be for the CH3COOH I CH3C00" system in order to create a pH 5.7? Round to two decimal places.
QUESTION 8
6.
How many grams of NH4CI must be added to 0.100 L of 0.445 M NH3 to produce a buffer solution with pH= 9.37 ? pKa (NH¼CI) = 9.24
Units are not required on the answer. Round your answer to two decimal places.
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