Question 1

Which of the following best describes a chemical change as opposed to a physical change?

Accepted Answer

Burning of wood to produce carbon dioxide and water

Question 2

In the reaction $$\mathrm{$$MgSO_4$$(aq) + 2NaOH(aq) \rightarrow Mg(OH)_2(s) + Na_2SO_4(aq)}$$, which ions are considered spectator ions?

Accepted Answer

$$\mathrm{Na^+}$$ and $$\mathrm{SO_4$^{2-}}$$

Question 3

Which of the following combinations will result in a precipitation reaction?

Accepted Answer

$$\mathrm{Na_2SO_4}$$ and $$\mathrm{$$BaCl_2$$}$$

Question 4

Given the solubility rules, which compound is most likely to be insoluble in water?

Accepted Answer

$$\mathrm{Mg(OH)_2}$$

Question 5

What is the net ionic equation for the reaction between $$\mathrm{HCl(aq)}$$ and $$\mathrm{NaOH(aq)}$$?

Accepted Answer

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

Question 6

Which statement correctly describes an acid-base neutralization reaction?

Accepted Answer

An acid reacts with a base to produce a salt and water

Question 7

If $$\mathrm{Ca(NO_3$)_2} is $$mixed with $$\mathrm{Na_2SO_4} in $$aqueous solution, what is the expected precipitate?

Accepted Answer

$$\mathrm{$$CaSO_4$$}$$

Question 8

Which of the following is a correct example of a physical change?

Accepted Answer

Melting of ice

Question 9

What is the role of $$\mathrm{OH^-} in an $$acid-base reaction?

Accepted Answer

It acts as a proton acceptor

Question 10

Which of the following best explains why $$\mathrm{Mg(OH)_2}$$ forms a precipitate when $$\mathrm{$$MgSO_4$$}$$ and $$\mathrm{NaOH}$$ are mixed?

Accepted Answer

Because $$\mathrm{Mg(OH)_2} is $$insoluble in water according to solubility rules

Question 11

Which ions are responsible for the formation of $$\mathrm{Mg(OH)_2}$$ precipitate in the reaction $$\mathrm{$$MgSO_4$$(aq) + 2NaOH(aq)}$$?

Accepted Answer

$$\mathrm{Mg$$^{2+}$$}$$ and $$\mathrm{OH^-}$$

Question 12

Which of the following is NOT a spectator ion in the reaction $$\mathrm{HCl(aq) + NaOH(aq) \rightarrow H_2O(l) + NaCl(aq)}$$?

Accepted Answer

$$\mathrm{H^+}$$

Question 13

A student mixes $$\mathrm{NH_4_3PO_4}$$ and $$\mathrm{K_2CO_3} in $$water. According to solubility rules, will a precipitate form?

Accepted Answer

No, because all products are soluble

Question 14

Which of the following is the correct molecular equation for the reaction between $$\mathrm{Na_2SO_4}$$ and $$\mathrm{$$BaCl_2$$}$$?

Accepted Answer

$$\mathrm{Na_2SO_4(aq) + $$BaCl_2$$(aq) \rightarrow $$BaSO_4$$(s) + 2NaCl(aq)}$$

Question 15

Which of the following best describes the process of neutralization?

Accepted Answer

The reaction of an acid and a base to produce water and a salt

Question 16

If $$\mathrm{NaOH} is $$mixed with $$\mathrm{Cu(NO_3$)_2}$$, what is the expected precipitate?

Accepted Answer

$$\mathrm{Cu(OH)_2}$$

Question 17

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

Accepted Answer

$$\mathrm{Ba$$^{2+}$$(aq) + SO_4$^{2-}(aq) \rightarrow $$BaSO_4$$(s)}$$

Question 18

Which of the following is true regarding solubility rules for ionic compounds?

Accepted Answer

All nitrates are soluble

Specific Types of Chemical Reactions: Inorganic Reactions in Aqueous Solutions

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