Calculate ΔG° and Kp for the following processes at 25°C.
Account for the differences in ΔG° and Kp obtained for parts (a) and (b).
Interpretation:
The standard free energy
Concept Introduction:
Chemical equilibrium: The term applied to reversible chemical reactions. It is the point at which the rate of the forward reaction is equal to the rate of the reverse reaction. The equilibrium is achieved; the concentrations of reactant and products become constant.
Entropy
Gibbs free energy (G): The thermodynamic quantity to the (
Heterogeneous equilibrium: This equilibrium reaction does not depend on the amounts of pure solid and liquid present, in other words heterogeneous equilibrium, substances are in different phases.
Answer to Problem 15.111QP
The equilibrium pressure (Kp) value of given the homogenies reaction is showed below.
Explanation of Solution
To find: Calculate the standard entropy
(a)
Calculate the heterogeneous equilibrium process
We consider the following standard free energy equation
The standard free energy values and partial pressure values are derived given the equilibrium statement (a) and its temperature.
To find: Calculate the standard entropy
Calculate the heterogeneous equilibrium process
Calculate the partial pressure values (Kp)
The given decomposition reaction the respective reactant to give products all exists in the different phase and this equilibrium reaction expression contains single conditions like gases phase, the equilibrium constant can also be represented by Kp and Kc, were the “P” partial pressure. The Kp derived equation showed above.
The equilibrium pressure (Kp) values are derived given both statement of homogenius equilibrium reactions.
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Chapter 15 Solutions
Chemistry: Atoms First
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