Question
35. Which of the following reactions correctly shows the combustion of methane (CH_(4)) a. CH_(4)+2O_(2)arrow CO_(2)+2H_(2)O C CH_(4)+CO_(2)arrow O_(2)+H_(2)O b 2CH_(4)+2O_(2)arrow 2CO_(2)+2H_(2)O d. CH_(4)+2CO_(2)arrow 2O_(2)+2H_(2)O
Answer
4.4
(175 Votes)
Ulysses
Master · Tutor for 5 years
Answer
a.
Explanation
Combustion reactions typically involve a hydrocarbon reacting with oxygen (
) to produce carbon dioxide (
) and water (
). In this case, methane (
) is the hydrocarbon.The general form of a combustion reaction for a hydrocarbon is:
For methane (
), the balanced chemical equation for its combustion is:
Let's examine the given options:- Option a:
- This matches the balanced equation for the combustion of methane.- Option b:
- This equation is not balanced correctly. The correct balanced form would involve 4
molecules on the reactant side.- Option c:
- This does not represent a combustion reaction, as
is not a reactant in combustion.- Option d:
- This also does not represent a combustion reaction, as
is not a reactant in combustion.Therefore, the correct reaction that shows the combustion of methane is option a.#