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Johathan Wehner

Feb 20, 2025

Chemistry: List the equilibria from largest to smallest equilibrium constant.?

Ethene (C2H4) reacts with halogens (X2) by the following reaction: C2H4(g)+X2(g)⇌C2H4X2(g) The following figures(Figure 1) represent the concentrations at equilibrium at the same temperature when X2 is Cl2 (green), Br2 (brown), and I2 (purple).Can anyone explain how to solve this problem please, and show me how to get the answer? Thanks!
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Johathan Wehner

Feb 20, 2025

Since Keq is calculated asKeq = [C2H4X2]/[C2H4][X2]Look at each "reaction". In the Cl2 one, you have 8 product molecules and 2 each of the two reactants. In the Br2, you have 6 product molecules and more reactants, and in the I2, you have 4 products. Since the amount of product is lower in each on, KCl2 > KBr2 > KI2... Show More
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