Answer : The coefficient used for the oxygen in balanced chemical reaction is, 3.
Explanation :
Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
When methanol is burned in air then it react to give carbon dioxide and water as a products.
The balanced chemical reaction will be,
[tex]2CH_3OH(l)+3O_2(g)\rightarrow 2CO_2(s)+4H_2O(g)[/tex]
This reaction is a combustion reaction in which a hydrocarbon react with oxygen to given carbon dioxide and water as a products.
By stoichiometry we can say that, 2 mole of methanol react with 3 moles of oxygen to give 2 moles of carbon dioxide and 4 moles of water.
Hence, from the balanced chemical reaction we conclude that the coefficient used for the oxygen is 3.
The balanced equation is:
Combustion is a reaction of a substance with oxygen with the release of heat and light.
In the combustion of methanol, carbon(iv) oxide and water are produced.
The balanced equation is:
2 CH3OH + 3 O2 -----> 2 H2O + 2 CO2
Based on the balanced equation, the coefficient of oxygen is 3.
Learn more about combustion at: https://brainly.com/question/884053
