Question

1. The products of a combustion reaction do NOT include ______.

a. water
b. carbon dioxide
c. carbon monoxide
d. hydogen

2. Which of the following is a blanced equation representing the decomposition of lead(IV) oxide?

a. PbO2 -> Pb + 2O
b. PbO2 -> Pb + O2
c. Pb2O -> 2Pb + O
d. PbO -> Pb + O2

Answer 1

Hey there!

1.Hydrogen
2.PbO₂=Pb+O₂

Hope this helps!

Answer 2

Answer: 1. The products of a combustion reaction do NOT include hydrogen.

2.  $PbO_{2} \rightarrow Pb + O_{2}$ is the decomposition reaction of lead(IV) oxide.

Explanation:

1. Combustion reaction is a reaction in which a hydrocarbon reacts in the presence of oxygen in order to produce water and carbon dioxide.

For example, $CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O$ is a combustion reaction.

Thus, we can conclude that the products of a combustion reaction do NOT include hydrogen.

2. An equation is balanced when number of reactants equal the number of products.

Decomposition reaction of lead(IV) oxide is as follows.

       $PbO_{2} \rightarrow Pb + O_{2}$

Here, the number of both reactants and products are equal. Thus, it is a balanced equation.