Quiz 6
Quiz 6
Question 1 of 12
4.0/ 4.0 Points
Which of these compounds would you expect to be least soluble in water? A.NH3 B.NaCl C.CH3OH
Correct D.N2 E.not enough information
Answer Key: D
Question 2 of 12
0.0/ 4.0 Points
Which of the following substances is NOT a solution? A.brass B.air C.vodka D.copper
Incorrect E.All of the above are solutions.
Answer Key: D
Question 3 of 12
4.0/ 4.0 Points
Hexane, a nonpolar solvent, will dissolve which of the following substances? A.ammonium acetate B.sodium chloride
Correct C.oil D.vinegar (acetic acid) E.none of the above
Answer Key: C
Question 4 of 12
0.0/ 4.0 Points
What is the mass percent of a sodium fluoride solution prepared by dissolving 0.64 moles of sodium fluoride into 63.5 grams of water? A.29.7%
Incorrect B.42.3% C.70.3% D.26.9% E.none of the above
Answer Key: A
Question 5 of 12
0.0/ 4.0 Points
Solubility of gases in water: A.is independent of pressure above solution. B.decreases with increasing pressure above solution. C.increases with increasing pressure above solution. D.Gases are not soluble in water.
Incorrect E.none of the above
Answer Key: C
Part 2 of 3 - 16.0/ 20.0 Points
Question 6 of 12
0.0/ 4.0 Points
A buffer solution is all of the following EXCEPT: A.a solution that resists a change in pH when a base is added. B.a solution that regulates pH by the addition of a strong acid or base. C.a solution that resists a change in pH when an acid is added.
Incorrect D.a solution that contains both a weak acid and its conjugate base. E.All of the above are true.
Answer Key: B
Question 7 of 12
4.0/ 4.0 Points
What is the value of the ion product constant for water (Kw)? A.0.0 B.1.0 x 1014 C.1.0 x 10-7
Correct D.1.0 x 10-14 E.1.0 x 107
Answer Key: D
Question 8 of 12
4.0/ 4.0 Points
What is the pH of a solution that has a H⁺ concentration equal to 1.7 x 10-5 M? A.0.22 B.5.20 C.10.20
Correct D.4.77 E.none of the above
Answer Key: D
Question 1 of 12
4.0/ 4.0 Points
Which of these compounds would you expect to be least soluble in water? A.NH3 B.NaCl C.CH3OH
Correct D.N2 E.not enough information
Answer Key: D
Question 2 of 12
0.0/ 4.0 Points
Which of the following substances is NOT a solution? A.brass B.air C.vodka D.copper
Incorrect E.All of the above are solutions.
Answer Key: D
Question 3 of 12
4.0/ 4.0 Points
Hexane, a nonpolar solvent, will dissolve which of the following substances? A.ammonium acetate B.sodium chloride
Correct C.oil D.vinegar (acetic acid) E.none of the above
Answer Key: C
Question 4 of 12
0.0/ 4.0 Points
What is the mass percent of a sodium fluoride solution prepared by dissolving 0.64 moles of sodium fluoride into 63.5 grams of water? A.29.7%
Incorrect B.42.3% C.70.3% D.26.9% E.none of the above
Answer Key: A
Question 5 of 12
0.0/ 4.0 Points
Solubility of gases in water: A.is independent of pressure above solution. B.decreases with increasing pressure above solution. C.increases with increasing pressure above solution. D.Gases are not soluble in water.
Incorrect E.none of the above
Answer Key: C
Part 2 of 3 - 16.0/ 20.0 Points
Question 6 of 12
0.0/ 4.0 Points
A buffer solution is all of the following EXCEPT: A.a solution that resists a change in pH when a base is added. B.a solution that regulates pH by the addition of a strong acid or base. C.a solution that resists a change in pH when an acid is added.
Incorrect D.a solution that contains both a weak acid and its conjugate base. E.All of the above are true.
Answer Key: B
Question 7 of 12
4.0/ 4.0 Points
What is the value of the ion product constant for water (Kw)? A.0.0 B.1.0 x 1014 C.1.0 x 10-7
Correct D.1.0 x 10-14 E.1.0 x 107
Answer Key: D
Question 8 of 12
4.0/ 4.0 Points
What is the pH of a solution that has a H⁺ concentration equal to 1.7 x 10-5 M? A.0.22 B.5.20 C.10.20
Correct D.4.77 E.none of the above
Answer Key: D