$$\text{Pb}^{2+} (aq) + 2\text{Cl}^- (aq) \rightarrow \text{PbCl}_2 (s)$$

$$\text{Na}_2\text{CO}_3(aq) + 2\text{HCl}(aq) \rightarrow 2\text{NaCl}(aq) + \text{H}_2\text{O}(l) + \text{CO}_2(g)$$

$$\text{Ba}^{2+}(aq) + \text{SO}_4$$^{2-}$$(aq) \rightarrow \text{BaSO}_4(s)$$

$$2\text{H}^+(aq) + \text{CO}_3$$^{2-}$$(aq) \rightarrow \text{CO}_2(g) + \text{H}_2\text{O}(l)$$

$$\text{H}^+(aq) + \text{OH}^-(aq) \rightarrow \text{H}_2\text{O}(l)$$

Question 1

Which of the following compounds would result in the highest conductivity when dissolved in water, as shown in the Electrolytes lab diagram?

Accepted Answer

HCl

Question 2

Which of the following is a correct net ionic equation for the reaction between lead(II) acetate and hydrochloric acid?

Accepted Answer

$$	ext{Pb}^{2+} (aq) + 2	ext{Cl}^- (aq) ightarrow 	ext{PbCl}_2 (s)$$

Question 3

According to the solubility rules, which of the following compounds is insoluble in water?

Accepted Answer

$$	ext{AgCl}$$

Question 4

Which of the following best describes a spectator ion in a double displacement reaction?

Accepted Answer

An ion that does not participate in the chemical change

Question 5

What is the oxidation number of chromium in $$	ext{Cr}_2(	ext{CrO}_4)_3$$?

Accepted Answer

+3

Question 6

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

Accepted Answer

$$	ext{Na}_2	ext{CO}_3(aq) + 2	ext{HCl}(aq) ightarrow 2	ext{NaCl}(aq) + 	ext{H}_2	ext{O}(l) + 	ext{CO}_2(g)$$

Question 7

Which of the following statements about redox reactions is TRUE?

Accepted Answer

Redox reactions involve the transfer of electrons between species

Question 8

In the reaction $$	ext{Zn}(s) + 2	ext{Ag}^+(aq) ightarrow 	ext{Zn}^{2+}(aq) + 2	ext{Ag}(s)$$, which species is oxidized?

Accepted Answer

$$	ext{Zn}$$

Question 9

Which of the following is the correct net ionic equation for the reaction of barium nitrate with sodium sulfate?

Accepted Answer

$$	ext{Ba}^{2+}(aq) + 	ext{SO}_4$$^{2-}$$(aq) ightarrow 	ext{BaSO}_4(s)$$

Question 10

Which of the following best describes a weak electrolyte?

Accepted Answer

A compound that partially dissociates in water

Question 11

Which of the following is a correct assignment of oxidation numbers for all elements in $$	ext{Na}_2	ext{O}_2$$?

Accepted Answer

Na: +1, O: -1

Question 12

Which of the following is the correct net ionic equation for the reaction between iron(III) carbonate and nitric acid?

Accepted Answer

$$2	ext{H}^+(aq) + 	ext{CO}_3$$^{2-}$$(aq) ightarrow 	ext{CO}_2(g) + 	ext{H}_2	ext{O}(l)$$

Question 13

Which of the following is a correct mnemonic for remembering oxidation and reduction?

Accepted Answer

Both A and C

Question 14

Which of the following compounds is a strong electrolyte?

Accepted Answer

$$	ext{KBr}$$

Question 15

A solution of acetic acid ($$	ext{CH}_3	ext{COOH}) in $$water conducts electricity poorly. This is because acetic acid is:

Accepted Answer

A weak electrolyte

Question 16

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

Accepted Answer

$$	ext{H}^+(aq) + 	ext{OH}^-(aq) ightarrow 	ext{H}_2	ext{O}(l)$$

Question 17

Which of the following is a correct assignment of oxidation numbers for all elements in $$	ext{ClO}_2$$?

Accepted Answer

Cl: +4, O: -2

Question 18

Which of the following best describes the process for writing a net ionic equation for a double displacement reaction?

Accepted Answer

Write the balanced molecular equation, split strong electrolytes into ions, remove spectator ions

Electrolytes, Double Displacement, and Redox Reactions: Study Notes

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