A student performs the pka of an Indicator experiment with phenol red, and obtains the following data at 560 nm. pH 7.13 7.39 7.79 8.21 8.56 Pure Hin Pure In 1: Calculate log A-AIN АHIN Absorbance 0.144 0.234 0.402 0.550 0.627 0.0003 0.712 A- A In- AHIn - A log- for the five solutions, as well as the pka for each. n-A 2: Calculate the average pka. Using this value, calculate the Ka of phenol red. pka
A student performs the pka of an Indicator experiment with phenol red, and obtains the following data at 560 nm. pH 7.13 7.39 7.79 8.21 8.56 Pure Hin Pure In 1: Calculate log A-AIN АHIN Absorbance 0.144 0.234 0.402 0.550 0.627 0.0003 0.712 A- A In- AHIn - A log- for the five solutions, as well as the pka for each. n-A 2: Calculate the average pka. Using this value, calculate the Ka of phenol red. pka
Introductory Chemistry: A Foundation
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Chapter16: Acids And Bases
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Problem 19QAP: . How is the strength of an acid related to the fact that a competition for protons exists in...
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![A student performs the pka of an Indicator experiment with phenol red, and obtains the following data
at 560 nm.
pH
7.13
7.39
7.79
8.21
8.56
Pure HIn
Pure In
A-AIN
AHIR-A
1: Calculate log
A Ain
AHIn - A
Absorbance log-
0.144
0.234
0.402
0.550
0.627
0.0003
0.712
for the five solutions, as well as the pka for each.
2: Calculate the average pka. Using this value, calculate the K₂ of phenol red.
pka](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdee8ae33-4eca-4bcd-9517-a19806391164%2F30e878f9-434b-4d9d-9388-74f1bb07bb94%2Fd26ns7c_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A student performs the pka of an Indicator experiment with phenol red, and obtains the following data
at 560 nm.
pH
7.13
7.39
7.79
8.21
8.56
Pure HIn
Pure In
A-AIN
AHIR-A
1: Calculate log
A Ain
AHIn - A
Absorbance log-
0.144
0.234
0.402
0.550
0.627
0.0003
0.712
for the five solutions, as well as the pka for each.
2: Calculate the average pka. Using this value, calculate the K₂ of phenol red.
pka
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