7. (1 point) Colligative properties are directly related to the ____. *
freezing point of a solute
nature of the solute
nature of the solvent
number of solute particles in a solution
8. (1 point) What is the formula for sulfuric acid? *
H₃SO₄
H₃SO₃
H₂SO₄
H₂SO₃
9. (1 point) Which of the following is an Arrhenius base? *
CH₃COOH
HSO₄⁻
LiOH
NH₄⁺
10. (1 point) A Lewis base is a substance that can ____. *
accept a pair of electrons
accept a hydrogen ion
donate a hydrogen ion
donate a pair of electrons
11. (1 point) Which compound is amphoteric and can act as both a Brønsted-Lowry acid and a Brønsted-Lowry base? *
ammonia
hydrochloric acid
sodium hydroxide
water
12. (1 point) What are the bases in the following equilibrium reaction? CN⁻ + H₂O ⇄ HCN + OH⁻ *
CN⁻ , H₂O
CN⁻, OH⁻
H₂O, HCN
H₂O, OH⁻
13. (1 point) The products of the self-ionization of water are _______. *
H₃O⁺ and H₂O
OH⁻ and OH⁺
OH⁺ and H⁻
OH⁻ and H⁺
14. (1 point) What type of solution is one with a pH of 10? *
acidic
basic
neutral
The type varies depending on the solution.
15. (1 point) The base dissociation constant is only found for ________. *
Concentrated bases
Dilute bases
Strong bases
Weak Bases
16. (1 point) A 18M solution of an acid that ionizes only slightly in solution would be termed_________. *
concentrated and weak
strong and dilute
dilute and weak
concentrated and strong
Short Answer / Essay Questions
Please answer the following with complete sentences If there is math involved please show all of your work -The work is worth at least 1 point.
17. (3 points) If the solubility of a gas is 5.6 g/L at 505 kPa pressure, what is the solubility of the gas when the pressure is 1010kPa? *
18. (4 points) You have your choice of sucrose, C₁₂H₂₂O₁₁, sodium chloride, NaCl, or calcium chloride, CaCl₂ to use to melt the ice on the driveway. Explain why each choice will melt the ice, but also include which is the best choice and why. *
19. (3 points) Calculate the [H⁺] for the aqueous solution in which [OH⁻] is 1 x10⁻⁹. Is this solution acidic, basic or neutral? Show your work *
20. (3 points) What is an acid dissociation constant? When can it not be calculated and why? *
21. (4 points total) Classify each solution as either an acid or a base using the properties that are stated. What are two ways these solutions are similar? Solution A – has a bitter taste and feels slippery Solution B – has a sour taste and feels sticky.
