Question 1

Which of the following statements best describes an aqueous solution?

Accepted Answer

A solution in which water is the solvent.

Question 2

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

Accepted Answer

NaCl (sodium chloride)

Question 3

What is the net ionic equation for the reaction between Pb(NO\_3)\_2(aq) and 2KI(aq)?

Accepted Answer

$$\mathrm{Pb$$^{2+}$$(aq) + 2I$$^{-}$$(aq) \rightarrow $$PbI_2$$(s)}$$

Question 4

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

Accepted Answer

C\_12H\_22O\_11 (sucrose)

Question 5

A student mixes solutions of Na\_2SO\_4 and Ba(NO\_3)\_2. What precipitate, if any, will form?

Accepted Answer

BaSO\_4 will precipitate because it is insoluble.

Question 6

Which of the following best describes a metathesis (exchange) reaction?

Accepted Answer

A reaction in which the cations and anions of two compounds exchange partners.

Question 7

Which of the following is the correct formula for calculating molarity?

Accepted Answer

$$\mathrm{M = \frac{moles\;of\;solute}{volume\;of\;solution\;in\;liters}}$$

Question 8

A solution is prepared by dissolving 0.50 mol of NaCl in enough water to make 2.0 L of solution. What is the molarity of the solution?

Accepted Answer

$$\mathrm{0.25\;M}$$

Question 9

Which of the following acids is a strong acid?

Accepted Answer

HNO\_3

Question 10

What is the product of the neutralization reaction between HCl(aq) and NaOH(aq)?

Accepted Answer

NaCl(aq) and H\_2O(l)

Question 11

A 250 mL sample of 0.40 M NaOH is diluted to a final volume of 1.0 L. What is the new concentration?

Accepted Answer

$$\mathrm{0.10\;M}$$

Question 12

Which of the following is a spectator ion in the reaction: Pb(NO\_3)\_2(aq) + 2KCl(aq) \rightarrow PbCl\_2(s) + 2KNO\_3(aq)?

Accepted Answer

K\^{+}

Question 13

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

Accepted Answer

BaSO\_4

Question 14

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 15

A student wants to prepare 500 mL of 0.20 M KBr solution. How many moles of KBr are needed?

Accepted Answer

$$\mathrm{0.10\;mol}$$

Question 16

Which of the following reactions will produce a gas as one of the products?

Accepted Answer

$$\mathrm{$$CaCO_3$$(s) + 2HCl(aq) \rightarrow $$CaCl_2$$(aq) + CO_2$(g) + H_2O(l)}$$

Question 17

During a titration, what is the equivalence point?

Accepted Answer

The point at which the moles of acid equal the moles of base.

Question 18

Which of the following is true about weak electrolytes?

Accepted Answer

They dissociate partially in water and establish equilibrium.

Question 19

If 100 mL of 1.0 M HCl is diluted to 400 mL, what is the final concentration?

Accepted Answer

$$\mathrm{0.25\;M}$$

Chapter 4: Reactions in Aqueous Solution – General Chemistry Study Notes

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