$$M = \frac{\text{moles of solute}}{\text{liters of solution}}$$

Question 1

Which of the following best describes a strong electrolyte in aqueous solution?

Accepted Answer

A substance that completely ionizes in water, producing a large number of ions.

Question 2

Given the reaction: $$2KI(aq) + Pb(NO_3$)_2(aq) \rightarrow $$PbI_2$$(s) + 2KNO_3(aq)$$, which ions are spectator ions?

Accepted Answer

K$$^+$$ and NO$$_3^-$$

Question 3

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

Accepted Answer

BaSO$$_4$$

Question 4

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

Accepted Answer

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

Question 5

Calculate the pH of a 0.0025 M HCl solution.

Accepted Answer

pH = 2.60

Question 6

Which of the following is a weak electrolyte?

Accepted Answer

CH$$_3$$COOH

Question 7

A solution has a pH of 8.34. What is the $$[H^+]$$ concentration?

Accepted Answer

$$4.57 	imes 10$$^{-9}$$ M

Question 8

Which of the following reactions is a gas-forming reaction?

Accepted Answer

$$Na_2CO_3(aq) + 2HCl(aq) \rightarrow 2NaCl(aq) + H_2O(l) + CO_2$(g)$$

Question 9

What is the oxidation number of manganese in $$KMnO_4$$?

Accepted Answer

+7

Question 10

Which of the following is the correct balanced net ionic equation for the reaction of zinc metal with hydrochloric acid?

Accepted Answer

$$Zn(s) + 2H^+(aq) \rightarrow Zn$$^{2+}$$(aq) + H_2$(g)$$

Question 11

A 100 mg/dL solution is serially diluted 3 times with a 1:5 dilution factor each time. What is the final concentration?

Accepted Answer

0.8 mg/dL

Question 12

Which of the following best describes the role of an oxidizing agent in a redox reaction?

Accepted Answer

It gains electrons and is reduced.

Question 13

What is the pOH of a solution with $$[OH^-] = 4.82 	imes 10$$^{-5}$$ M?

Accepted Answer

pOH = 4.32

Question 14

Which of the following is a correct net ionic equation for a precipitation reaction?

Accepted Answer

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

Question 15

Which of the following acids is NOT a strong acid?

Accepted Answer

HF

Question 16

If the pH of a solution is 12.82, what is the $$[OH^-]$$ concentration?

Accepted Answer

$$6.60 	imes 10$$^{-2}$$ M

Question 17

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction where an insoluble solid forms and separates from solution.

Question 18

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

Accepted Answer

$$M = \frac{	ext{moles of solute}}{	ext{liters of solution}}$$

Question 19

Which of the following is the correct net ionic equation for the reaction between sodium carbonate and hydrochloric acid?

Accepted Answer

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

Study Notes: Chemical Reactions in Aqueous Solutions and Redox Chemistry

Study Guide - Practice Questions