
(a)
Interpretation:Ratio of
Concept introduction: Reactant when reacted in presence of oxygen molecule to form desired product such type of reaction is called combustion reaction. In this reaction, energy is produced in large amount with release of heat. Molecular oxygen is generally required for such kind of reaction that acts as an oxidizing agent.
The expression used for the calculation of number of moles of any species is as follows:
(a)

Answer to Problem 4.94P
Ratio of
Explanation of Solution
Incomplete combustion of gasoline,
Complete combustion of gasoline,
The expression used for the calculation of number of moles of gasoline is as follows:
Mass of complete combustion of
Molar mass of
Substitute the values in above equation.
The expression used for the calculation of number of moles of gasoline is as follows:
Mass of incomplete combustion of
Molar mass of
Substitute the values in above equation.
According to the balanced equation of complete combustion of gasoline, two moles of
Moles of complete combustion of
Substitute the values in above equation.
According to the balanced equation of incomplete combustion of gasoline, two moles of
Moles of incomplete combustion of
Substitute the values in above equation.
The ratio of molecules of
Molecules of
Molecules of
Substitute the values in above equation.
(b)
Interpretation:The ratio of masses of
Concept introduction:The quantity of species that gives the relation between reactants and products is determined by the stoichiometry of a reaction. Consider the general reaction,
In the above reaction, two moles of
(b)

Answer to Problem 4.94P
Ratio of mass of
Explanation of Solution
The formula used for the calculation of mass of
Moles of
Substitute the values in above equation.
The formula used for the calculation of mass of
Moles of
Substitute the values in above equation.
The expression used for the calculation of ratioof mass of
Mass of
Substitute the values in above equation.
(c)
Interpretation:Percentage of gasoline that forms
Concept introduction: Mass ratio of a component is defined as the ratio of mass of one component to that of other component. The ratio of two components A and B is expressed as follows:
(c)

Answer to Problem 4.94P
Percentage of gasoline that forms
Explanation of Solution
Suppose x be the fraction of
The expression used for the calculation of mass ratio of
Molar mass of
Substitute the values in above equation.
The value of x is
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Chapter 4 Solutions
Principles of General Chemistry
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