(a)
Interpretation: Balanced chemical equation for the combustion of ethane needs to be written.
Concept Introduction : Combustion is a
(a)
Answer to Problem 3E
Balanced chemical equation for the combustion of ethane is,
Explanation of Solution
The chemical formula of ethane is
The above equation is not balanced. Balanced chemical equation is the chemical equation in which number of atoms of every element is equal in reactant and product side of the chemical reaction.
To balance the equation, add coefficient 2 to
(b)
Interpretation: The energy diagram for combustion of ethane needs to be drawn.
Concept Introduction : Combustion is a chemical reaction in which a compound or an element undergoes reaction with oxygen and releases energy in the form of light and heat. Combustion of covalent compounds comprising carbon and hydrogen produces carbon dioxide and water. So, ethane undergoes combustion reaction to produce carbon dioxide and water.
(b)
Answer to Problem 3E
The energy diagram for combustion of ethane is,
Explanation of Solution
From the chapter 103, the heat of combustion of ethane is
So, the heat energy diagram for combustion of ethane is,
(c)
Interpretation: The net energy exchange of the reverse reaction to form ethane is to be determined.
Concept Introduction : In a chemical process, energy is conserved. This means, net exchange of energy in a forward process is equal and opposite to exchange of net energy in the reverse process. If a forward reaction exothermic, the reverse reaction is endothermic.
(c)
Answer to Problem 3E
The net energy exchange of reverse reaction to form ethane and oxygen is
Explanation of Solution
The combustion reaction of ethane is as follows:
The net energy released in the process of combustion of ethane is
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