Answer to Question #347615 in General Chemistry for Toniece

Question

Question 1

By applying the solubility guidelines, state which of the following compounds will precipitate in water?

a. Cobalt (II) hydroxide.

b. Sodium nitrate.

c. Ammonium phosphate.

d. Potassium Chloride.

e. None of the above.   

Question 2

Consider an acid-base reaction when Nitric acid is added to copper(II) hydroxide. What is the net ionic equation for this reaction?

a. H⁺(aq) + OH^-(aq) → H₂O(l)

b. 2H⁺(aq) + Cu(OH)₂(s) → Cu²⁺(aq) + 2H₂O(l)

c. 2HNO₃(aq) +Cu(OH)₂(s) → Cu(NO₃)₂(s) + 2H₂O(l)

d. 2H⁺(aq) + 2NO₃^-(aq) + Cu²⁺(aq) + 2OH^-(aq) → Cu(NO₃)₂(s) + 2H₂O(l)

e. 2H⁺(aq) + 2NO₃^-(aq) + Cu²⁺(aq) + 2OH^-(aq) → Cu²⁺(aq) + 2NO₃^-(aq) + 2H₂O(l)

 Question 3

In a certain reaction, element X was converted to X^2-. In the reaction, X acts as

a. a precipitating agent

b. an acid

c. a base

d. a reducing agent

e. an oxidizing agent

 Question 4

Identify the type of reagent that is required to convert N₂H₄ to N₂?

a. acid

b. base

c. reducing agent

d. oxidizing agent

e. precipitating agent

Answer 1

1.

a. Co(OH)₂

2.

a. H⁺ + OH^- = H₂O

3.

e. An oxidizing agent

4.

d. Oxidizing agent