Question 1

Which of the following best describes a weak acid in aqueous solution?

Accepted Answer

It is partially ionized in aqueous solution.

Question 2

When solid sodium carbonate ($$Na_2CO_3) $$dissolves in water, which equation correctly represents the process?

Accepted Answer

$$Na_2CO_3(s) \rightarrow 2Na^+(aq) + CO_3$^{2-}(aq)$$

Question 3

In the precipitation reaction $$CaCl_2(aq) + 2$$AgNO_3(aq) \rightarrow 2AgCl(s) + Ca($$NO_3)_2(aq$$)$$, which ions are spectator ions?

Accepted Answer

Ca$$^{2+}$$ and NO$$_3^-$$

Question 4

Which of the following substances will be least soluble in water?

Accepted Answer

FeCO$$_3$$

Question 5

When solutions of CuSO$$_4(aq) $$and Pb(NO$$_3$$)$$_2(aq) $$are mixed, what is the chemical formula for the precipitate that forms?

Accepted Answer

PbSO$$_4$$

Question 6

What is the net ionic equation for the neutralization of HNO$$_3(aq) $$with KOH(aq)?

Accepted Answer

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

Question 7

A student mixes solutions of $$AgNO_3$$ and $$NaCl. $$What is the net ionic equation for the formation of the precipitate?

Accepted Answer

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

Question 8

Which of the following best explains why $$FeCO_3 is $$less soluble in water than $$BaCl_2$$?

Accepted Answer

Iron(II) carbonate forms a strong ionic lattice that is not easily broken by water molecules.

Question 9

If 0.1 mol of $$Na_2CO_3 is $$dissolved in water, how many moles of $$Na^+$$ ions are produced?

Accepted Answer

0.2 mol

Question 10

Which of the following is a correct statement about spectator ions in a chemical reaction?

Accepted Answer

Spectator ions remain unchanged in solution and do not participate in the reaction.

Question 11

A solution contains $$K_3PO_4$$ and $$BaCl_2. $$What precipitate, if any, will form?

Accepted Answer

Ba$$_3(PO$_4$$)$$_2$$

Question 12

Which of the following is true about the solubility of nitrates in water?

Accepted Answer

Most nitrates are soluble in water.

Question 13

Which of the following is the correct ionic equation for the reaction between $$BaCl_2(aq$$)$$ and K_2SO_4(aq$$)$$?

Accepted Answer

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

Question 14

Which of the following is a property of strong acids?

Accepted Answer

They are 100% ionized in aqueous solution.

Question 15

A student adds $$Pb(NO_3$)_2 to a $$solution containing $$SO_4$$^{2-}$$ ions. What observation is expected?

Accepted Answer

A white precipitate of $$PbSO_4$$ forms.

Question 16

Which of the following best describes the role of water in the dissolution of ionic compounds?

Accepted Answer

Water molecules surround and stabilize the ions, allowing them to separate.

Question 17

Which of the following is the correct net ionic equation for the reaction between $$HCl(aq)$$ and $$NaOH(aq)$$?

Accepted Answer

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

Question 18

Which of the following ions would NOT be a spectator ion in the reaction $$AgNO_3(aq) + $$NaCl(aq) \rightarrow AgCl(s) + $$NaNO_3(aq$$)$$?

Accepted Answer

Ag$$^+$$

Question 19

A solution contains $$Ca^{2+}$$ and $$NO_3$$^-$$ ions after a precipitation reaction. What does this indicate about these ions?

Accepted Answer

They are spectator ions and remain dissolved in solution.

General Chemistry Practice Test 2 – Key Concepts and Step-by-Step Guidance

Study Guide - Practice Questions