Question 1

Which of the following best describes what happens when sodium chloride (NaCl) dissolves in water?

Accepted Answer

Na+ and Cl- ions are separated and surrounded by water molecules, becoming solvated.

Question 2

Which of the following compounds is a strong electrolyte when dissolved in water?

Accepted Answer

NaCl

Question 3

Which of the following is a weak electrolyte?

Accepted Answer

CH3COOH

Question 4

Which of the following best explains why methanol (CH3OH) does not conduct electricity when dissolved in water?

Accepted Answer

Methanol molecules remain intact and do not form ions.

Question 5

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of AgNO3 and KCl?

Accepted Answer

$$\mathrm{Ag^+(aq) + Cl^-(aq) \rightarrow AgCl(s)}$$

Question 6

Which of the following compounds will form a precipitate when mixed with a solution of BaCl2?

Accepted Answer

K2SO4

Question 7

A solution is prepared by dissolving 10.5 g of NaF (molar mass = 42 g/mol) in enough water to make 250 mL of solution. What is the molarity of the solution?

Accepted Answer

$$\mathrm{0.40\ M}$$

Question 8

Which of the following is a strong acid according to the provided table?

Accepted Answer

Hydrochloric acid, HCl

Question 9

Which of the following solutions contains the largest number of moles of chloride ions?

Accepted Answer

10.0 mL of 0.500 M BaCl2

Question 10

What is the net ionic equation for the reaction between HCl(aq) and NaOH(aq)?

Accepted Answer

$$\mathrm{H^+(aq) + OH^-(aq) \rightarrow H_2O(l)}$$

Question 11

A solution is made by dissolving 0.268 g of glucose in 2.50 g of water. What is the mass percent of glucose in the solution?

Accepted Answer

$$\mathrm{9.68\%}$$

Question 12

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction in which an insoluble solid forms when two solutions are mixed.

Question 13

How many moles of NaF are present in 50 mL of 0.5 M NaF solution?

Accepted Answer

$$\mathrm{0.025\ mol}$$

Question 14

Which of the following compounds is insoluble in water according to the solubility rules provided?

Accepted Answer

CaCO3

Question 15

What is the molarity of a solution prepared by dissolving 5.0 g of glucose (C6H12O6, MM = 180 g/mol) in enough water to make 100 mL of solution?

Accepted Answer

$$\mathrm{0.278\ M}$$

Question 16

Which of the following is a correct net ionic equation for the reaction between CaCO3(s) and HCl(aq)?

Accepted Answer

$$\mathrm{$$CaCO_3$$(s) + 2H^+(aq) \rightarrow Ca$$^{2+}$$(aq) + CO_2$(g) + H_2O(l)}$$

Question 17

If 14.5 mL of 10.4 M HCl is diluted to a total volume of 74.3 mL, what is the molarity of the diluted HCl solution?

Accepted Answer

$$\mathrm{2.03\ M}$$

Question 18

Which of the following best describes a spectator ion?

Accepted Answer

An ion that remains unchanged on both sides of a chemical equation.

Question 19

Which of the following is the correct balanced molecular equation for the reaction between Pb(NO3)2(aq) and 2 KI(aq)?

Accepted Answer

$$\mathrm{Pb(NO_3$)_2(aq) + 2KI(aq) \rightarrow $$PbI_2$$(s) + 2KNO_3(aq)}$$

Properties of Solutions, Electrolytes, Precipitation, and Solution Stoichiometry

Guida di studio - Domande di pratica

Study guide - Flashcard