Question 1

Which of the following best describes why water is an effective solvent for ionic compounds?

Accepted Answer

Water molecules have a polar structure, with partial negative charge on oxygen and partial positive charges on hydrogens, allowing them to surround and stabilize ions.

Question 2

Which of the following compounds will form a precipitate when mixed in aqueous solution with Pb(NO$$_3$$)$$_2$$?

Accepted Answer

KI

Question 3

Which of the following is a strong electrolyte in aqueous solution?

Accepted Answer

NaCl

Question 4

What is 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 household substances is most likely to be basic?

Accepted Answer

Baking soda

Question 6

Assign the oxidation number to chromium in K$$_2$$CrO$$_4.$$

Accepted Answer

+6

Question 7

Which of the following reactions is a redox reaction?

Accepted Answer

$$\mathrm{2Na(s) + Cl_2(g) \rightarrow 2NaCl(s)}$$

Question 8

Which of the following best describes a weak electrolyte?

Accepted Answer

A substance that partially dissociates into ions in water.

Question 9

What is the oxidation number of nitrogen in NO$$_3^-$$?

Accepted Answer

+5

Question 10

Which of the following statements about acids and bases is correct?

Accepted Answer

Acids are proton donors and bases are proton acceptors.

Question 11

Which of the following combinations will NOT result in a precipitation reaction?

Accepted Answer

KI(aq) + NaCl(aq)

Question 12

Which of the following is the correct net ionic equation for the reaction between FeCl$$_2(aq) $$and K$$_2$$CrO$$_4(aq$$)?

Accepted Answer

$$\mathrm{Fe^{2+}(aq) + CrO_4^{2-}(aq) \rightarrow FeCrO_4(s)}$$

Question 13

Which of the following best explains why Na is a better reducing agent than Cu?

Accepted Answer

Na is higher on the activity series and more easily loses electrons.

Question 14

Which of the following is a property of bases?

Accepted Answer

They dissolve fats and oils and turn litmus paper blue.

Question 15

Which of the following is the correct balanced molecular equation for the reaction between Ba(OH)$$_2(aq) $$and HNO$$_3(aq$$)?

Accepted Answer

$$\mathrm{Ba(OH)_2(aq) + 2HNO_3(aq) \rightarrow Ba(NO_3)_2(aq) + 2H_2O(l)}$$

Question 16

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

Accepted Answer

It loses electrons and is oxidized.

Question 17

Which of the following is the correct oxidation number for sulfur in SO$$_4$$^{2-}$$?

Accepted Answer

+6

Question 18

A solution of Na$$_2SO$_4 is $$mixed with a solution of BaCl$$_2. $$What is the precipitate formed?

Accepted Answer

BaSO$$_4$$

Question 19

Which of the following best describes a nonelectrolyte?

Accepted Answer

A substance that dissolves in water but does not produce ions.

Reactions in Aqueous Solution: Acids, Bases, and Redox Chemistry

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