Solution Found!
Answer: Water gas, a mixture of H2 and CO, is a fuel made
Chapter 17, Problem 17.56(choose chapter or problem)
Water gas, a mixture of H2 and CO, is a fuel made by reacting steam with red-hot coke (a by-product of coal distillation): H2O(g) 1 C(s) CO(g) 1 H2(g) From the data in Appendix 3, estimate the temperature at which the reaction begins to favor the formation of products.
Questions & Answers
QUESTION:
Water gas, a mixture of H2 and CO, is a fuel made by reacting steam with red-hot coke (a by-product of coal distillation): H2O(g) 1 C(s) CO(g) 1 H2(g) From the data in Appendix 3, estimate the temperature at which the reaction begins to favor the formation of products.
ANSWER:Step 1 of 4
Gibbs free energy change
The chemical energy of a reaction can be expressed using the Gibbs free energy. All the chemical systems tend to exist in a state of minimum Gibbs energy.
Therefore, a reaction in which the change in Gibbs energy is negative becomes spontaneous as the system loses free energy.
The reactions that occur without external work are called spontaneous reactions. For a chemical reaction to occur, the temperature is adjusted for the system such that the change in Gibbs energy will have a negative value.
When a reaction attains equilibrium, the Gibbs free energy of the system attains a constant value, or the change in Gibbs energy becomes zero.