Question 1

Which of the following best describes the process of preparing a 1.00 M NaCl solution as shown in the diagram?

Accepted Answer

Weigh out 1.00 mol of NaCl, add it to a volumetric flask, add water until the solid is dissolved, then add more water until the total volume is 1.00 L.

Question 2

A solution is prepared by diluting 50.0 mL of 6.00 M HCl to a final volume of 300.0 mL. What is the final concentration of HCl?

Accepted Answer

$$M_1$$ $$V_1$$ = $$M_2$$ $$V_2$$; $$M_2$$ = \frac{$$M_1$$ $$V_1$$}{$$V_2$$} = \frac{6.00 	imes 50.0}{300.0} = 1.00$$ M

Question 3

Which of the following is a strong electrolyte?

Accepted Answer

NaCl(aq)

Question 4

Which of the following equations represents 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 5

Which of the following compounds is insoluble in water?

Accepted Answer

CaCO$$_3$$

Question 6

What is the oxidation state of sulfur in SO$$_4$$^{2-}$$?

Accepted Answer

+6

Question 7

Which of the following reactions is a precipitation reaction?

Accepted Answer

$$\mathrm{Na_2CO_3(aq) + $$CuCl_2$$(aq) \rightarrow $$CuCO_3$$(s) + 2 NaCl(aq)}$$

Question 8

A titration requires 22.87 mL of 0.158 M KOH to neutralize 20.0 mL of H$$_2SO$_4. $$What is the concentration of the H$$_2SO$_4$$ solution?

Accepted Answer

$$M_1$$ $$V_1$$ = \frac{1}{2} $$M_2$$ $$V_2$$; $$M_1$$ = \frac{0.158 	imes 22.87}{2 	imes 20.0} = 0.0903$$ M

Question 9

Which of the following best describes a redox reaction?

Accepted Answer

A reaction involving the transfer of electrons between reactants.

Question 10

Which of the following is the correct balanced molecular equation for the reaction between potassium hydroxide and nickel(II) bromide?

Accepted Answer

$$2 \mathrm{KOH(aq) + $$NiBr_2$$(aq) \rightarrow 2 KBr(aq) + Ni(OH)_2(s)}$$

Question 11

Which of the following is a nonelectrolyte solution?

Accepted Answer

A sugar solution

Question 12

Which of the following is the correct net ionic equation for the reaction of Na$$_2CO$_3(aq) $$with HNO$$_3(aq$$)?

Accepted Answer

$$\mathrm{CO_3$^{2-}(aq) + 2 H^+(aq) \rightarrow H_2O(l) + CO_2$(g)}$$

Question 13

Which of the following statements about acids is TRUE?

Accepted Answer

Strong acids ionize completely in water, while weak acids ionize only partially.

Question 14

Which of the following is the correct oxidation state for oxygen in K$$_2O$_2$$?

Accepted Answer

-1

Question 15

Which of the following is a double-displacement reaction?

Accepted Answer

$$\mathrm{$$AgNO_3$$(aq) + NaCl(aq) \rightarrow AgCl(s) + $$NaNO_3$$(aq)}$$

Question 16

Which of the following best describes the role of an antacid in neutralizing stomach acid?

Accepted Answer

It acts as a base, reacting with excess HCl to form water and a salt.

Question 17

Which of the following is the correct complete ionic equation for the reaction between KOH(aq) and Mg(NO$$_3$$)$$_2(aq$$)?

Accepted Answer

$$2 \mathrm{K^+(aq) + 2 OH^-(aq) + Mg$$^{2+}$$(aq) + 2 NO_3$^-(aq) \rightarrow 2 K^+(aq) + 2 NO_3$^-(aq) + Mg(OH)_2(s)}$$

Question 18

Which of the following is the correct net ionic equation for the reaction between H$$_2SO$_4(aq) $$and Ba(OH)$$_2(aq$$)?

Accepted Answer

$$\mathrm{2 H^+(aq) + 2 OH^-(aq) \rightarrow 2 H_2O(l)}$$

Chapter 4: Solution Chemistry, Ionic Equations, and Reaction Types

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