44. In the equation below; C6H5NH₂(aq) + H₂O(l) ⇒ CH₂NH₂ (aq) + OH¯(aq) Which compound is considered as the conjugate base? C2H5NH2 B. C2H5NH+3 A. C. H₂O D. OH- 45. Which compound is considered as the conjugate acid? A. C₂H5NH2 B. H₂O C. C₂H5NH+3 D. OH- 46. A mixture of 0.20 M acetic acid and 0.30 M sodium acetate is given. What the pH of the medium if the pKA of the acetic acid is 4.76. A. 2.94 B. 3.94 C. 4.94 C. 5.94
44. In the equation below; C6H5NH₂(aq) + H₂O(l) ⇒ CH₂NH₂ (aq) + OH¯(aq) Which compound is considered as the conjugate base? C2H5NH2 B. C2H5NH+3 A. C. H₂O D. OH- 45. Which compound is considered as the conjugate acid? A. C₂H5NH2 B. H₂O C. C₂H5NH+3 D. OH- 46. A mixture of 0.20 M acetic acid and 0.30 M sodium acetate is given. What the pH of the medium if the pKA of the acetic acid is 4.76. A. 2.94 B. 3.94 C. 4.94 C. 5.94
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section16.10: The Lewis Concept Of Acids And Bases
Problem 2.5ACP: To measure the relative strengths of bases stronger than OH, it is necessary to choose a solvent...
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Transcribed Image Text:44. In the equation below;
C6H5NH₂(aq) + H₂O(l) ⇒ CH₂NH₂ (aq) + OH¯(aq)
Which compound is considered as the conjugate base?
A. C₂H5NH2 B. C2H5NH+3
C. H₂O
D. OH-
45. Which compound is considered as the conjugate
acid?
A. C2H5NH2
B. H₂O
C. C₂H5NH+3
D. OH-
46. A mixture of 0.20 M acetic acid and 0.30 M sodium acetate is given. What the pH of the medium if the pKA
of the acetic acid is 4.76.
A. 2.94
B. 3.94
C. 4.94
C. 5.94
47. Which of the following describes surface tension in water?
A. surface tension occurs due to ionic bonding
B.
surface tension of water is weakened by hydrogen bonding
C. surface tension is caused by water molecules repelling one another
D. surface tension allows water to support small objects if they are placed carefully on its surface
48. Which of the following scenarios is an example of cohesion?
A. water sticks to the walls of blood vessels.
B. water molecules stick to the surface of a mirror.
C. water molecules stick to one another and form a bead.
D. water molecule stay on the tip of the needle because the water is attracted to the surface of the needle.
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