Methane ch4 (g) reacts with oxygen gas to produce carbon dioxide and water. b) butane c4h10 (g) reacts with oxygen gas to produce carbon dioxide and water. c) an aqueous solution of sulfuric acid reacts with aqueous potassium hydroxide to produce potassium sulfate and water.

The chemical equations are written below.

Explanation:

For a: Methane reacts with oxygen gas to produce carbon dioxide and water.

Combustion reaction is defined as the reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water

The chemical equation for the combustion of methane follows:

This is also an example of combustion reaction.

The chemical equation for the combustion of butane follows:

When an acid reacts with a base, it leads to the formation of salt and water. This reaction is known as neutralization reaction

The chemical equation for the reaction of potassium hydroxide and sulfuric acid follows:

Hence, the chemical equations are written above.