Question 8

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Question 8

• What are the major species in an aqueous solution
  of HA and NaOH?
• The Ka value for HA is 1.0 x 10-6.
• a) H2O, HA, H, A, Na, OH
• b) H2O, HA, NaOH
• c) H2O, HA, Na, OH
• d) H2O, NaOH, H, A

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Question 9

• What is the dominant reaction in an aqueous
  solution of HA and NaOH?
• a) HA(aq) H2O H3O(aq) A-(aq)
• b) H2O H2O H3O(aq) OH-(aq)
• c) HA(aq) OH-(aq) H2O A-(aq)

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Question 10

• Should we consider the following reaction to be
  an equilibrium or to go to completion?
• HA(aq) OH-(aq) H2O A-(aq)
• a) Equilibrium
• b) Completion
• c) Not sure

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Question 11

• After we run the previous reaction to completion,
  what are the new major species (started with 2.0
  M HA and 1.0 M NaOH)?
• The Ka value for HA is 1.0 x 10-6.
• a) H2O, H, A, Na, OH
• b) H2O, HA, NaOH
• c) H2O, HA, Na, OH
• d) H2O, HA, Na, A

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Question 12

• What is the dominant reaction after the previous
  reaction goes to completion?
• a) HA(aq) H2O H3O(aq) A-(aq)
• b) H2O H2O H3O(aq) OH-(aq)

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Question 13

• Should we consider the following reaction to be
  an equilibrium or to go to completion?
• HA(aq) H2O H3O(aq) A-(aq)
• a) Equilibrium
• b) Completion
• c) Not sure

7
What If?

• What if we start with 1.0 M HA and 1.0 M NaOH?
• The Ka value for HA is 1.0 x 10-6.
• How should the answer compare to 2.0 M HA and 1.0
  M NaOH?
• How does this change how we solve the problem?

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Question 14

• What are the major species in an aqueous solution
  of HA, NaA and HCl?
• The Ka value for HA is 1.0 x 10-6.
• a) H2O, HA, NaA, HCl
• b) H2O, HA, Na, A, H, Cl
• c) H2O, HA, NaA, H, Cl
• d) H2O, Na, A, H, Cl

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Question 15

• What is the dominant reaction in an aqueous
  solution of HA, NaA and HCl?
• a) HA(aq) H2O H3O(aq) A-(aq)
• b) H2O H2O H3O(aq) OH-(aq)
• c) H (aq) A-(aq) HA(aq)

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Question 16

• Should we consider the following reaction to be
  an equilibrium or to go to completion?
• H(aq) A-(aq) HA(aq)
• a) Equilibrium
• b) Completion
• c) Not sure

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Question 17

• After we run the previous reaction to completion,
  what are the new major species (started with 1.0
  M HA, 1.0 M NaA and 0.1 M HCl)?
• The Ka value for HA is 1.0 x 10-6.
• a) H2O, HA, A-, Na, Cl
• b) H2O, HA, HCl, Na
• c) H2O, HA, Na, Cl

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Question 18

• What is the dominant reaction after the previous
  reaction goes to completion?
• a) HA(aq) H2O H3O(aq) A-(aq)
• b) H2O H2O H3O(aq) OH-(aq)

13
Question 19

• Should we consider the following reaction to be
  an equilibrium or to go to completion?
• HA(aq) H2O H3O(aq) A-(aq)
• a) Equilibrium
• b) Completion
• c) Not sure