Multiple Choice
During the complete combustion of one molecule of methane (CH_4), how many covalent bonds are broken in the reactant molecules before new bonds are formed in the products?
28
views
3. Chemical Reactions
Combustion Analysis
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is always a reactant in a combustion reaction?
A
CO_2
B
N_2
C
O_2
D
H_2O
Verified step by step guidance1
Understand what a combustion reaction is: it is a chemical reaction where a substance (usually a hydrocarbon or other organic compound) reacts with oxygen to produce energy, typically in the form of heat and light.
Identify the common reactants in combustion reactions: the fuel (such as a hydrocarbon) and oxygen gas (\(\mathrm{O_2}\)).
Recognize that oxygen (\(\mathrm{O_2}\)) is essential because it acts as the oxidizing agent that combines with the fuel to produce combustion products.
Note that \(\mathrm{CO_2}\) and \(\mathrm{H_2O}\) are typically products of combustion, not reactants.
Understand that \(\mathrm{N_2}\) is often present in the air but does not usually react in combustion; it is not a required reactant.
2:09mWatch next
Master Empirical Formula via Combustion with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Combustion Analysis practice set
Problem sets built by lead tutorsExpert video explanations