Deck 6: Properties of Solutions I: Aqueous Solutions

Question 1

Which of the following is the correct name for the acid H₃PO₄?

A) hydrophosphoric acid
B) phosphoric acid
C) phosphate acid
D) phosphorous acid

Answer 1

phosphoric acid

Question 2

A 25.0-mL solution contains 0.45 g of cadmium cyanide. Which type of solution is this? ​

A) saturated
B) supersaturated
C) undersaturated
D) unsaturated

Answer 2

supersaturated

Question 3

A luminol solution is used to detect the presence of blood. What is the molarity of a luminol solution that was made by dissolving 15.5 g of luminol (C₈H₇N₃O₂) in water to a final volume of 90.0 mL?

A) 0.0875 M
B) 0.972 M
C) 0.172 M
D) 0.00787 M

Answer 3

0.972 M

Question 4

Which of the following compounds is soluble in water?

A) silver chloride
B) barium carbonate
C) calcium phosphate
D) potassium hydroxide

Question 5

An unknown solution is determined to have a pH of 4.5. Identify the solution as being acidic, basic, or neutral.

A) acidic
B) basic
C) neutral

Question 6

What is the pH of a 1.4 M HCl solution?

Question 7

Write the net ionic equation for the precipitation of lead(II) iodide from the addition of lead(II) nitrate solution to a potassium iodide solution.

Question 8

Which of the following compound is a weak electrolyte?

A) HBr
B) Sr(OH)₂
C) NaCl
D) H₃PO₄

Question 9

Identify Ca(OH)₂ as a strong acid, strong base, weak acid, or weak base.

A) strong acid
B) strong base
C) weak acid
D) weak base

Question 10

Identify H₂CO₃ as a strong acid, strong base, weak acid, or weak base.

A) strong acid
B) strong base
C) weak acid
D) weak base

Question 11

Which of the following compound is insoluble in water?

A) Na₃PO₄
B) CaS
C) PbSO₄
D) (NH₄)₂CrO₄

Question 12

What is the molarity of a solution prepared by dissolving 29.3 g KCl in water to a final volume of 500.0 mL?

A) 0.586 M
B) 58.6 M
C) 0.786 M
D) 0.000786 M

Question 13

Which of the following compounds is a strong electrolyte?

A) HF
B) NH₃
C) NaOH
D) CH₃CO₂H
Enter the appropriate word(s) to complete the statement.

Question 14

Which term is used to describe a solution that contains less solute than the maximum amount of solute that can be dissolved?

A) saturated
B) supersaturated
C) undersaturated
D) unsaturated

Question 15

State whether each of the following compounds is an electrolyte or nonelectrolyte.

A) CaCl_{2 ______}
B) CO₂ _____
C) H₂SO₄ _____
D) C₆H₁₂O₆ _____

Question 16

Triclosan is an antibacterial agent present in some soaps and surgical cleaning treatments. Calculate the mass of triclosan, C₁₂H₇Cl₃O₂, needed to prepare 750.0 mL of a 5.00 × 10^-5 M solution.

A) 0.109 g
B) 0.0109 g
C) 3.75 × 10^-5 g
D) 6.67 × 10^-5 g

Question 17

A 100.0-mL solution contains 27.8 g of sodium cyanide. Which type of solution is this? ​

A) saturated
B) supersaturated
C) undersaturated
D) unsaturated

Question 18

Hydrofluoric acid is used to etch glass. Concentrated hydrofluoric acid is 28.9 M. If a 500.0-mL sample of 5.75 M HF is needed, how many mL of the concentrated HF should be diluted?

A) 0.0100 mL
B) 83.1 mL
C) 99.5 mL
D) 2510 mL

Question 19

What ion would be used to form an insoluble compound with the ion Hg₂²⁺?

A) S^2-
B) C₂H₃O₂^-
C) NO₃^-
D) Br^-

Question 20

What is the pH of a 0.280 M HNO₃ solution?