Holt Ch 13 PPt

Multiple Choice

Why is it important to understand the difference between dissociation and ionization in aqueous solutions?

• Because it helps explain how substances conduct electricity in water

• Because it determines the color of the solution

• Because it affects the boiling point of water

• Because it changes the taste of the solution

Multiple Choice

Based on the solution to Sample Problem B, which compound is the precipitate formed in the reaction between zinc nitrate and ammonium sulfide?

• Zinc sulfide (ZnS)

• Ammonium nitrate (NH4NO3)

• Zinc nitrate (Zn(NO3)2)

• Ammonium sulfide ((NH4)2S)

Open Ended

What is one concept from Chapter 13 (such as dissociation, ionization, or electrolytes) that you would like to learn more about or found most interesting?

Multiple Select

Select all the ions that are considered spectator ions in the reaction: Cd2+(aq) + 2NO3-(aq) + 2NH4+(aq) + S2-(aq) → CdS(s) + 2NO3-(aq) + 2NH4+(aq)

• Cd2+

• NO3-

• NH4+

• S2-

Open Ended

How does the composition and arrangement of particles in the solid crystals of CuSO4·5H2O compare with those in its aqueous solution?

Open Ended

Explain the difference between a net ionic equation and an overall ionic equation, using an example from the slides.

Open Ended

Compare the composition and arrangement of particles in the solid crystals of CuSO4·5H2O with those in the solution.

Multiple Choice

Compare the dissociation of NaCl and CaCl2 in water based on the chemical equations provided. What is the main difference in the number of ions produced?

• NaCl produces more ions than CaCl2

• CaCl2 produces more ions than NaCl

• Both produce the same number of ions

• Neither produces ions in water

Multiple Choice

Which of the following best describes the process of dissociation in aqueous solutions as shown in the slides?

• Separation of ions when an ionic compound dissolves in water

• Formation of covalent bonds in water

• Evaporation of water molecules

• Combination of ions to form a solid

Open Ended

Why can compounds of very low solubility be considered insoluble for most practical purposes?

Open Ended

Write the equation for the dissolution of aluminum sulfate, Al2(SO4)3, in water. How many moles of aluminum ions and sulfate ions are produced by dissolving 1 mol of aluminum sulfate? What is the total number of moles of ions produced by dissolving 1 mol of aluminum sulfate?

Multiple Choice

According to the general solubility guidelines, which of the following compounds is most likely to be insoluble in water?

• Sodium chloride

• Potassium nitrate

• Calcium sulfate

• Ammonium acetate

Multiple Choice

Which of the following compounds will form a precipitate when mixed with a solution containing chloride ions?

• NaNO3

• AgNO3

• K2SO4

• NH4Cl

Open Ended

Explain the steps involved in writing a net ionic equation for a double-displacement reaction in aqueous solution.

Multiple Choice

Which of the following best represents the net ionic equation for the reaction between potassium sulfate and barium nitrate in aqueous solution?

• SO4^2-(aq) + Ba^2+(aq) → BaSO4(s)

• K2SO4(aq) + Ba(NO3)2(aq) → 2KNO3(aq) + BaSO4(s)

• 2K+(aq) + SO4^2-(aq) + Ba^2+(aq) + 2NO3^-(aq) → 2K+(aq) + 2NO3^-(aq) + BaSO4(s)

• K+(aq) + NO3^-(aq) → KNO3(aq)

Open Ended

Identify the precipitate that forms when aqueous solutions of zinc nitrate and ammonium sulfide are combined. Write the equation for the possible double-displacement reaction, the formula equation, overall ionic equation, and net ionic equation for the reaction.

Multiple Choice

What is the hydronium ion (H3O+) formed from in an aqueous solution?

• The combination of H+ and H2O

• The dissociation of NaCl

• The reaction of Cl- with water

• The evaporation of water

Multiple Select

Which of the following statements about electrolytes are correct?

• Electrolytes yield ions in solution

• Electrolytes conduct electric current in solution

• All electrolytes are strong

• The degree of ionization affects electrolyte strength

Multiple Choice

Based on the models shown, which solution contains only molecules and no ions?

• NaCl(aq)

• HF(aq)

• AgCl(aq)

• C12H22O11(aq)

Multiple Choice

Which of the following best describes a weak electrolyte?

• A compound whose aqueous solution conducts electricity well

• A compound whose aqueous solution contains mostly ions

• A compound whose aqueous solution contains mostly molecules and few ions

• A compound that does not dissolve in water

Open Ended

Explain the difference in the behavior of strong and weak electrolytes in aqueous solutions, using examples from the slides.