Consider a 0.10 M citric acid with Ka values given:H3C6H5O7 (aq) + H₂O(1)H₂C6H5O7 (aq) + H₂O)HC6H507² (aq) + H₂O(1)1. Determine the predominating species at pH=5.00.A. H3C6H5O7C. HC₂H5O7²-B. H₂C6H5O7D. C₂H5O7³-Answer:H₂C6H5O7 (aq) + H3O+ (aq)HC6H507² (aq) + H30* (aq)C6H507³ (aq) + H3O+ (aq)2. Determine the predominating species at pH=8.00.A. H3C6H5O7C. HC6H5O7²-B. H₂C6H5O7D. C6H5O7³-Answer:4K₂= 7.5 x 10-4K₂ = 1.7 x 10-5Ka = 4.0 x 10-7 2. Determine the predominating species at pH=8.00.A. H3C6H5O7C. HC6H507²-D. C₂H5O7³-B. H₂C6H5O7Answer:3. What is the fraction of H₂C6H5O7 at pH=4.00? Round-off your answer into four significant figures. Do notexpress your answer in scientific notation. Write 0 before the decimal point if the value is less than 1 (eg. 0.125).Answer:4. What is the molar concentration of H2₂C6H5O7 at pH=4.00? Round-off your answer into four significantfigures. Do not include units nor express your answer in scientific notation. Write 0 before the decimal point if thevalue is less than 1 (eg. 0.125).Answer:426 pts

We are provided with a 0.10 M citric acid which is a triprotic acid whose Ka values are as follows:…

Consider a 0.10 M citric acid with Ka values given: H3C6H5O7 (aq) + H₂O(1) H₂C6H5O7 (aq) + H₂O(1) HC6H507² (aq) + H₂O(1) H₂C6H5O7 (aq) + H3O+ (aq) HC6H5072 (aq) + H30* (aq) C6H507³ (aq) + H30* (aq) 1. Determine the predominating species at pH=5.00. A. H3C6H5O7 C. HC6H5O7²- B. H₂C6H5O7 D. C₂H5O7³- Ka = 7.5 x 10-4 Ka = 1.7 x 10-5 K₂ = 4.0 x 10-7

Consider a 0.10 M citric acid with Ka values given: H3C6H5O7 (aq) + H₂O(1) H₂C6H5O7 (aq) + H₂O(1) HC6H507² (aq) + H₂O(1) H₂C6H5O7 (aq) + H3O+ (aq) HC6H5072 (aq) + H30* (aq) C6H507³ (aq) + H30* (aq) 1. Determine the predominating species at pH=5.00. A. H3C6H5O7 C. HC6H5O7²- B. H₂C6H5O7 D. C₂H5O7³- Ka = 7.5 x 10-4 Ka = 1.7 x 10-5 K₂ = 4.0 x 10-7

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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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

Consider a 0.10 M citric acid with Ka values given:
H3C6H5O7 (aq) + H₂O(1)
H₂C6H5O7 (aq) + H₂O)
HC6H507² (aq) + H₂O(1)
1. Determine the predominating species at pH=5.00.
A. H3C6H5O7
C. HC₂H5O7²-
B. H₂C6H5O7
D. C₂H5O7³-
Answer:
H₂C6H5O7 (aq) + H3O+ (aq)
HC6H507² (aq) + H30* (aq)
C6H507³ (aq) + H3O+ (aq)
2. Determine the predominating species at pH=8.00.
A. H3C6H5O7
C. HC6H5O7²-
B. H₂C6H5O7
D. C6H5O7³-
Answer:
4
K₂= 7.5 x 10-4
K₂ = 1.7 x 10-5
Ka = 4.0 x 10-7

2. Determine the predominating species at pH=8.00.
A. H3C6H5O7
C. HC6H507²-
D. C₂H5O7³-
B. H₂C6H5O7
Answer:
3. What is the fraction of H₂C6H5O7 at pH=4.00? Round-off your answer into four significant figures. Do not
express your answer in scientific notation. Write 0 before the decimal point if the value is less than 1 (eg. 0.125).
Answer:
4. What is the molar concentration of H2₂C6H5O7 at pH=4.00? Round-off your answer into four significant
figures. Do not include units nor express your answer in scientific notation. Write 0 before the decimal point if the
value is less than 1 (eg. 0.125).
Answer:
4
26 pts

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