44. Solution to Chemistry Problem

44. Solution to Chemistry Problem

3. For the chemical reaction shown in Table 1, calculate the heat effect (DN), entropy change (DS), Gibbs free energy change (DG) and equilibrium constant (Kp) at temperature T = 398K. Determine the direction of the chemical reaction occurring in a gaseous medium of a given composition. Partial pressures of the gas mixture components are given in the table

Composition of the initial gas mixture Partial pressures of the mixture components, atm
A B C D RA RV RS RD
2 3 4 5 6 7 8 9
4HCl
O2
2H2O
2Cl2
1.1 2.5 0.5 1.4

Analyze the results and answer the following questions:
1. Which substances, initial substances or reaction products, will be more in the equilibrium mixture?
2. What do the phrases mean: "the equilibrium is shifted towards the initial substances" and "the equilibrium is shifted towards the reaction products"?

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