Question 1

The solubility of a salt increases as its Ksp increases.

Accepted Answer

A) True 
 B)False

Question 2

An environmental chemist obtained a 200.mL sample of lake water believed to be contaminated with a single monoprotic strong acid.Titrating this sample with a 0.0050 M NaOH(aq)required 7.3 mL of the NaOH solution to reach the endpoint.What is the pH of the lake?

Accepted Answer

The answer of An environmental chemist obtained a 200.mL sample...

Question 3

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 * 10-5]

Accepted Answer

A)  4.65
B)  4.71
C)  4.56
D)  4.84
E)  5.07F) D) and E)
G) None of the above

Question 4

Write an equation showing the net reaction that occurs when a strong base is added to a CO32-/HCO3- buffer solution (for carbonic acid, Ka1 = 4.2 * 10-7, Ka2 = 2.4 * 10-8):

Accepted Answer

HCO<sub>3</sub><sup>...

Question 5

The Ksp for silver(I) phosphate is 1.8 * 10-18. Determine the silver ion concentration in a saturated solution of silver(I) phosphate.

Accepted Answer

A)  1.6 * 10-5 M
B)  2.1 * 10-5 M
C)  3.7 * 10-5 M
D)  1.1 * 10-13 M
E)  4.8 * 10-5 MF) A) and B)
G) C) and D)

Question 6

The molar solubility of tin(II) iodide is 1.28 * 10-2 mol/L. What is Ksp for this compound?

Accepted Answer

A)  8.4 * 10-6
B)  1.28 * 10-2
C)  4.2 * 10-6
D)  1.6 * 10-4
E)  2.1 * 10-6F) A) and B)
G) A) and D)

Question 7

Will a precipitate of magnesium fluoride form when 200.mL of 1.9 * 10-3 M MgCl2 are added to 300.mL of 1.4 * 10-2 M NaF? [Ksp (MgF2) = 6.9 * 10-9]

Accepted Answer

A)  Yes, Q > Ksp
B)  No, Q sp
C)  No, Q = Ksp
D)  Yes, Q spE) A) and B)
F) A) and C)

Question 8

What is the pH at the equivalence point in the titration of 100 mL of 0.10 M HCN (Ka = 4.9 * 10-10) with 0.10 M NaOH?

Accepted Answer

A)  3.0
B)  6.0
C)  7.0
D)  11.0
E)  12.0F) B) and E)
G) B) and D)

Question 9

Which of the following would decrease the Ksp for PbI2?

Accepted Answer

A)  Lowering the pH of the solution
B)  Adding a solution of Pb(NO3) 2
C)  Adding a solution of KI
D)  None of the above-the Ksp of a compound is constant at constant temperature.E) B) and D)
F) None of the above

Question 10

The Ksp for silver(I) phosphate is 1.8 * 10-18. Calculate the molar solubility of silver(I) phosphate.

Accepted Answer

A)  1.6 * 10-5 M
B)  2.1 * 10-5 M
C)  3.7 * 10-5 M
D)  7.2 * 10-1 M
E)  1.8 * 10-1 MF) B) and C)
G) None of the above

Exam 16: Acid-Base Equilibria and Solubility Equilibria

What is the pH at the equivalence point in the titration of 100 mL of 0.10 M HCN (K_a = 4.9 * 10^-10) with 0.10 M NaOH?

Correct Answer
verified

Which of the following would decrease the K_sp for PbI₂?

Correct Answer
verified

The solubility of a salt increases as its K_sp increases.

Correct Answer
verified

The molar solubility of tin(II) iodide is 1.28 * 10^-2 mol/L. What is K_sp for this compound?

Correct Answer
verified

The K_sp for silver(I) phosphate is 1.8 * 10^-18. Determine the silver ion concentration in a saturated solution of silver(I) phosphate.

Correct Answer
verified

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH₃COOH) and 0.20 M sodium acetate (CH₃COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [K_a = 1.8 * 10^-5]

Correct Answer
verified

An environmental chemist obtained a 200.mL sample of lake water believed to be contaminated with a single monoprotic strong acid.Titrating this sample with a 0.0050 M NaOH(aq)required 7.3 mL of the NaOH solution to reach the endpoint.What is the pH of the lake?

Correct Answer
verified

Will a precipitate of magnesium fluoride form when 200.mL of 1.9 * 10^-3 M MgCl₂ are added to 300.mL of 1.4 * 10^-2 M NaF? [K_sp (MgF₂) = 6.9 * 10^-9]

Correct Answer
verified

Write an equation showing the net reaction that occurs when a strong base is added to a CO₃^2-/HCO₃^- buffer solution (for carbonic acid, K_a1 = 4.2 * 10^-7, K_a2 = 2.4 * 10^-8):

Correct Answer
verified
HCO₃^...
View Answer

The K_sp for silver(I) phosphate is 1.8 * 10^-18. Calculate the molar solubility of silver(I) phosphate.

Correct Answer
verified

Exam 16: Acid-Base Equilibria and Solubility Equilibria

What is the pH at the equivalence point in the titration of 100 mL of 0.10 M HCN (Ka = 4.9 * 10-10) with 0.10 M NaOH?

Correct AnswerverifiedShow Answer

Which of the following would decrease the Ksp for PbI2?

Correct AnswerverifiedShow Answer

The solubility of a salt increases as its Ksp increases.

Correct AnswerverifiedShow Answer

The molar solubility of tin(II) iodide is 1.28 * 10-2 mol/L. What is Ksp for this compound?

Correct AnswerverifiedShow Answer

The Ksp for silver(I) phosphate is 1.8 * 10-18. Determine the silver ion concentration in a saturated solution of silver(I) phosphate.

Correct AnswerverifiedShow Answer

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH3COOH) and 0.20 M sodium acetate (CH3COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [Ka = 1.8 * 10-5]

Correct AnswerverifiedShow Answer

An environmental chemist obtained a 200.mL sample of lake water believed to be contaminated with a single monoprotic strong acid.Titrating this sample with a 0.0050 M NaOH(aq)required 7.3 mL of the NaOH solution to reach the endpoint.What is the pH of the lake?

Correct AnswerverifiedShow Answer

Will a precipitate of magnesium fluoride form when 200.mL of 1.9 * 10-3 M MgCl2 are added to 300.mL of 1.4 * 10-2 M NaF? [Ksp (MgF2) = 6.9 * 10-9]

Correct AnswerverifiedShow Answer

Write an equation showing the net reaction that occurs when a strong base is added to a CO32-/HCO3- buffer solution (for carbonic acid, Ka1 = 4.2 * 10-7, Ka2 = 2.4 * 10-8):

Correct AnswerverifiedHCO3...View AnswerShow Answer

The Ksp for silver(I) phosphate is 1.8 * 10-18. Calculate the molar solubility of silver(I) phosphate.

Correct AnswerverifiedShow Answer

What is the pH at the equivalence point in the titration of 100 mL of 0.10 M HCN (K_a = 4.9 * 10^-10) with 0.10 M NaOH?

Correct Answer
verified

Which of the following would decrease the K_sp for PbI₂?

Correct Answer
verified

The solubility of a salt increases as its K_sp increases.

Correct Answer
verified

The molar solubility of tin(II) iodide is 1.28 * 10^-2 mol/L. What is K_sp for this compound?

Correct Answer
verified

The K_sp for silver(I) phosphate is 1.8 * 10^-18. Determine the silver ion concentration in a saturated solution of silver(I) phosphate.

Correct Answer
verified

You have 500.0 mL of a buffer solution containing 0.30 M acetic acid (CH₃COOH) and 0.20 M sodium acetate (CH₃COONa) . What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? [K_a = 1.8 * 10^-5]

Correct Answer
verified

Correct Answer
verified

Will a precipitate of magnesium fluoride form when 200.mL of 1.9 * 10^-3 M MgCl₂ are added to 300.mL of 1.4 * 10^-2 M NaF? [K_sp (MgF₂) = 6.9 * 10^-9]

Correct Answer
verified

Write an equation showing the net reaction that occurs when a strong base is added to a CO₃^2-/HCO₃^- buffer solution (for carbonic acid, K_a1 = 4.2 * 10^-7, K_a2 = 2.4 * 10^-8):

Correct Answer
verified
HCO₃^...
View Answer

The K_sp for silver(I) phosphate is 1.8 * 10^-18. Calculate the molar solubility of silver(I) phosphate.

Correct Answer
verified