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For the reaction CO2 (g) + H2(g) ↔ CO(g) + H2O(g) the value of K at 552°C is 0.137. If 3.0 moles of CO2, 3.0 moles of H2 , 1.5 mole of CO and 1.5 mole of H2O are initially present in a 1.0 L closed vessel, what are the actual concentrations of CO2, H2,CO and H2O at equilibrium

For the reaction CO2 (g) + H2(g) ↔ CO(g) + H2O(g) the value of K at 552°C is 0.137. If 3.0 moles of CO2, 3.0 moles of H2 , 1.5 mole of CO and 1.5 mole of H2O are initially present in a 1.0 L closed vessel, what are the actual concentrations of CO2, H2,CO and H2O at equilibrium

Grade:12th pass

1 Answers

Sakshi
askIITians Faculty 652 Points
8 years ago
For this reaction, as one can see that 1 mole of CO2 react with one mole of H2 to give one mole of CO and one mole of H20.
If one assumes that x mole of CO2 gets used up in the reaction, the value of all the species at equilibrium will be CO2(3-x), H2( 3-x), CO (1.5 + x) and H2O (1.5 + X)
Then, on using the value of equilibrium constant as
0.137= (1.5 + x) 2/ (3-x) 2
On solving and substituting the value of x, one can find the ans to the above question.
Enjoy the ans !!

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