Question 1

Which of the following statements best describes a solution?

Accepted Answer

A homogeneous mixture of two or more substances, where the solute is the minor component and the solvent is the major component.

Question 2

What is the molarity of a solution prepared by dissolving 29.2 g of KCl (molar mass = 74.55 g/mol) in enough water to make 500.0 mL of solution?

Accepted Answer

$0.784\ \mathrm{M}$

Question 3

A student needs to prepare 250.0 mL of a 1.50 M KBr solution. What mass of KBr (molar mass = 119.0 g/mol) is required?

Accepted Answer

$44.6\ \mathrm{g}$

Question 4

Which equation correctly relates the concentrations and volumes before and after dilution?

Accepted Answer

$M_1V_1 = M_2V_2$

Question 5

How many milliliters of 0.155 M KCl solution contain 2.55 g of KCl (molar mass = 74.55 g/mol)?

Accepted Answer

$220\ \mathrm{mL}$

Question 6

Which of the following compounds is expected to be soluble in water according to the solubility rules?

Accepted Answer

$\mathrm{Na_2SO_4}$

Question 7

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

Accepted Answer

$\mathrm{NaCl}$

Question 8

A precipitation reaction occurs when aqueous solutions of $\mathrm{Pb(NO_3)_2}$ and $\mathrm{KI}$ are mixed. What is the balanced molecular equation for this reaction?

Accepted Answer

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

Question 9

Which of the following is the net ionic equation for the reaction between $\mathrm{AgNO_3(aq)}$ and $\mathrm{NaCl(aq)}$?

Accepted Answer

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

Question 10

Which of the following is a nonelectrolyte when dissolved in water?

Accepted Answer

$\mathrm{C_{12}H_{22}O_{11}}$ (sucrose)

Question 11

What is the oxidation state of sulfur in $\mathrm{SO_4^{2-}}$?

Accepted Answer

$+6$

Question 12

Which of the following reactions is a redox reaction?

Accepted Answer

$\mathrm{2Na(s) + Cl_2(g) \rightarrow 2NaCl(s)}$

Question 13

A student dilutes 50.0 mL of a 6.00 M HCl solution to a final volume of 300.0 mL. What is the final concentration?

Accepted Answer

$1.00\ \mathrm{M}$

Question 14

Which of the following best explains why NaCl conducts electricity when dissolved in water, but sugar does not?

Accepted Answer

NaCl forms ions in solution, while sugar molecules remain intact and do not form ions.

Question 15

Which of the following is the correct net ionic equation for the neutralization of HCl(aq) with NaOH(aq)?

Accepted Answer

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

Question 16

A titration requires 25.00 mL of 0.200 M NaOH to neutralize 50.00 mL of HCl solution. What is the concentration of the HCl solution?

Accepted Answer

$0.100\ \mathrm{M}$

Question 17

Which of the following compounds will form a precipitate when mixed with an aqueous solution of $\mathrm{Ba(NO_3)_2}$?

Accepted Answer

$\mathrm{Na_2SO_4}$

Question 18

Which of the following is the correct oxidation state for oxygen in $\mathrm{H_2O_2}$ (hydrogen peroxide)?

Accepted Answer

$-1$

Chapter 8: Introduction to Solutions and Aqueous Reactions – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards