
(a)
Interpretation:
The standard free energy change for the given reactions should be calculated.
Concept introduction:
The Gibbs free energy or the free energy change is a
ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)
(b)
Interpretation:
The standard free energy change for per gram of each fuel should be calculated.
Concept introduction:
The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔGo. It can be calculated in a similar manner as entropy and enthalpy. The expression for the free energy change is:
ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)
(c)
Interpretation:
The better fuel should be identified.
Concept introduction:
The Gibbs free energy or the free energy change is a thermodynamic quantity represented by ΔGo. It can be calculated in a similar manner as entropy and enthalpy. The expression for the free energy change is:
ΔrG°=∑nΔfG°(products)−∑nΔfG°(reactants)

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Chapter 18 Solutions
Chemistry & Chemical Reactivity
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