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1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) *
34 g
204 g
56 g*******
2040 g
2. (1 point) For most solids, which of the following occurs as temperature increases? *
Molarity doubles
Solubility decreases.
Solubility increases*****
Solubility remains the same.
3. (1 point) If the solubility of a gas in water is 5.0 g/L when the pressure of the gas above the water is 2.5 atm, what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/L? *
0.50 atm
1.0 atm
5.0 atm ******
10 atm
4. (1 point) What is the molarity of a solution that contains 2 moles of solute in 4 liters of solution? *
0.5 M
0.75 M
1 M
2 M ******
5. (1 point) What mass of Na₂SO₄ is needed to make 1.8 L of 3.0 M solution? (Na = 23 g; S = 32 g; O = 16 g) *
142 g
334 g ****
767 g
1,534 g
6. (1 point) If the percent (mass/mass) for a solute is 6% and the mass of the solution is 300 g, what is the mass of solute in solution? *
18 g ******
36 g
72 g
180 g
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 ******
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