Aniline (PhNH2, MM = 93.13 g/mol) is a weak base (pKa of PhNH3+ = 4.600). a) A 25.0 mL sample of a solution of aniline requires 25.67 mL of 0.175 M HCI to reach the equivalence point in a titration. What is the original concentration of the aniline solution? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. x 0.18 concentration of aniline solution = M b) What is the pH of the aniline solution before any titrant has been added? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. pH = X 8.93 c) What is the pH of the solution after 7.00 mL of titrant have been added? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. pH = X 5.03 d) What is the pH at the equivalence point? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a 0 before the decimal point. Do not use scientific notation. X 2.82 pH=
Aniline (PhNH2, MM = 93.13 g/mol) is a weak base (pKa of PhNH3+ = 4.600). a) A 25.0 mL sample of a solution of aniline requires 25.67 mL of 0.175 M HCI to reach the equivalence point in a titration. What is the original concentration of the aniline solution? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. x 0.18 concentration of aniline solution = M b) What is the pH of the aniline solution before any titrant has been added? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. pH = X 8.93 c) What is the pH of the solution after 7.00 mL of titrant have been added? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O before the decimal point. Do not use scientific notation. pH = X 5.03 d) What is the pH at the equivalence point? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a 0 before the decimal point. Do not use scientific notation. X 2.82 pH=
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![Aniline (PhNH2, MM = 93.13 g/mol) is a weak base (pKa of PhNH3+ = 4.600).
a) A 25.0 mL sample of a solution of aniline requires 25.67 mL of 0.175 M HCI to reach the equivalence point in a titration. What is the original concentration of the aniline
solution? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a 0 before the decimal point. Do not
use scientific notation.
0.18
concentration of aniline solution =
M
b) What is the pH of the aniline solution before any titrant has been added? Round your answer to the correct number of significant figures and enter it into the box below. If your
answer is a decimal, include a 0 before the decimal point. Do not use scientific notation.
pH =
X 8.93
c) What is the pH of the solution after 7.00 mL of titrant have been added? Round your answer to the correct number of significant figures and enter it into the box below. If your
answer is a decimal, include a 0 before the decimal point. Do not use scientific notation.
pH =
× 5.03
d) What is the pH at the equivalence point? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O
before the decimal point. Do not use scientific notation.
2.82
pH=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F627ffe10-a730-4e4c-b7e9-b306478e5985%2F47b1ffe4-47ed-42e9-91ff-b5c3ac5cd8d9%2Fgtzyg5n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Aniline (PhNH2, MM = 93.13 g/mol) is a weak base (pKa of PhNH3+ = 4.600).
a) A 25.0 mL sample of a solution of aniline requires 25.67 mL of 0.175 M HCI to reach the equivalence point in a titration. What is the original concentration of the aniline
solution? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a 0 before the decimal point. Do not
use scientific notation.
0.18
concentration of aniline solution =
M
b) What is the pH of the aniline solution before any titrant has been added? Round your answer to the correct number of significant figures and enter it into the box below. If your
answer is a decimal, include a 0 before the decimal point. Do not use scientific notation.
pH =
X 8.93
c) What is the pH of the solution after 7.00 mL of titrant have been added? Round your answer to the correct number of significant figures and enter it into the box below. If your
answer is a decimal, include a 0 before the decimal point. Do not use scientific notation.
pH =
× 5.03
d) What is the pH at the equivalence point? Round your answer to the correct number of significant figures and enter it into the box below. If your answer is a decimal, include a O
before the decimal point. Do not use scientific notation.
2.82
pH=
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