What is the pH of a 0.44 M solution of the weak base C6H5NH₂ (aniline)? Kb 4.2 x 10-10 3 4.87 b. 9.13 c. 9.73 d. e. 9.31 13.14

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Chapter14: Acids And Bases
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Problem 10RQ: For oxyacids, how does acid strength depend on a. the strength of the bond to the acidic hydrogen...
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What is the pH of a 0.44 M solution of the weak base C6H5NH₂ (aniline)?
Kb=4.2 × 10-10
a 4.87
b. 9.13
c. 9.73
d. 9.31
e. 13.14
Which of the following acids is the weakest?
a. H₂Se
6 HCI
c. H₂O
d. HF
e. H₂S
Which salt would produce an acidic solution when dissolved in water?
a. K₂SO4
b. NH₂Cl
c. NaCN
a. 2.6 x 10-6
b. 5.3 × 10-8
c. 0.0024
The pH of a solution of a weak monoprotic acid (HA) is 2.96. The acid concentration in aqueous
solution is 0.455 M. What is the acid dissociation constant, K₂?
CaCO3
KF
e.
0.154
1.1 × 10-3
A buffer is made with 1.25 M acetic acid (HC₂H₂O₂) and 1.00 M sodium acetate (NaC₂H₂O₂). Which
statement correctly describes what happens when 0.15 M KOH is added to the buffer?
a. Acetic acid neutralizes the KOH and the pH rises slightly.
6.
The acetate ion neutralizes the KOH and the pH falls slightly.
Acetic acid neutralizes the KOH and the pH falls slightly.
d.
The acetate ion neutralizes the KOH and the pH rises slightly.
e. There is no way to predict what happens.
Transcribed Image Text:What is the pH of a 0.44 M solution of the weak base C6H5NH₂ (aniline)? Kb=4.2 × 10-10 a 4.87 b. 9.13 c. 9.73 d. 9.31 e. 13.14 Which of the following acids is the weakest? a. H₂Se 6 HCI c. H₂O d. HF e. H₂S Which salt would produce an acidic solution when dissolved in water? a. K₂SO4 b. NH₂Cl c. NaCN a. 2.6 x 10-6 b. 5.3 × 10-8 c. 0.0024 The pH of a solution of a weak monoprotic acid (HA) is 2.96. The acid concentration in aqueous solution is 0.455 M. What is the acid dissociation constant, K₂? CaCO3 KF e. 0.154 1.1 × 10-3 A buffer is made with 1.25 M acetic acid (HC₂H₂O₂) and 1.00 M sodium acetate (NaC₂H₂O₂). Which statement correctly describes what happens when 0.15 M KOH is added to the buffer? a. Acetic acid neutralizes the KOH and the pH rises slightly. 6. The acetate ion neutralizes the KOH and the pH falls slightly. Acetic acid neutralizes the KOH and the pH falls slightly. d. The acetate ion neutralizes the KOH and the pH rises slightly. e. There is no way to predict what happens.
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