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The water-gas shift reaction plays a central role in the
Chapter 17, Problem 30P(choose chapter or problem)
Problem 30P
The water-gas shift reaction plays a central role in the chemical methods for obtaining cleaner fuels from coal:
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
At a given temperature,Kp= 2.7. If 0.13 mol of CO, 0.56 mol of H2O, 0.62 mol of CO2, and 0.43 mol of H2 are put in a 2.0-L flask, in which direction does the reaction proceed ?
Questions & Answers
QUESTION:
Problem 30P
The water-gas shift reaction plays a central role in the chemical methods for obtaining cleaner fuels from coal:
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
At a given temperature,Kp= 2.7. If 0.13 mol of CO, 0.56 mol of H2O, 0.62 mol of CO2, and 0.43 mol of H2 are put in a 2.0-L flask, in which direction does the reaction proceed ?
ANSWER:
Solution 30P:
Here, we are going to explain about the equilibrium as well as the direction of the reaction.
Step 1:
Given reaction,
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
Therefore, the reaction quotient (Q) in terms of pressure for the reaction is defined as
----(1)
Thus, we know that
- when Q < K, the reactants would be large relative to the products.Therefore, the reaction proceeds towards right to form more product, until equilibrium is reached.
Thus, Reactant Products, when Q < K
- when Q > K, the product would be decrease with increase in reactant. Therefore, the reaction proceeds towards left, until equilibrium is reached.
Thus, Reactant Products, when Q > K
(c) It can be happened only when the reactant and product concentrations have attained their equilibrium values.Therefore, there is no net change in the reaction.
Thus, Reactant Products, when Q = K.