Problem: Ethene (C2H4) can be halogenated by the following reaction: C2H4(g) + X2(g) ⇌ C2H4X2(g)where X2 can be Cl2 (green), Br2 (brown), or I2 (purple). Examine the three figures below representing equilibrium concentrations in this reaction at the same temperature for the three different halogens.Rank the equilibrium constants for these three reactions from largest to smallest.

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FREE Expert Solution

Kc = productreactantKc =[C2H4X2][C2H4][X2]


(a) 

2 Cl2 (g)

2 C2H4 (g)

8 C2H4Cl2 (g)


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Problem Details
Ethene (C2H4) can be halogenated by the following reaction: C2H4(g) + X2(g) ⇌ C2H4X2(g)
where X2 can be Cl2 (green), Br2 (brown), or I2 (purple). Examine the three figures below representing equilibrium concentrations in this reaction at the same temperature for the three different halogens.
There are three figures. The first figure (a) has two Cl2 molecules, two C2H4 molecules, and eight C2H4Cl2 molecules. The second figure (b) has four Br2 molecules, four C2H4 molecules, and six C2H4Br2 molecules. The third figure (c) has seven I2 molecules, seven C2H4 molecules, and three C2H4I2 molecules.

Rank the equilibrium constants for these three reactions from largest to smallest.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Equilibrium Expressions concept. If you need more Equilibrium Expressions practice, you can also practice Equilibrium Expressions practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Galindo-Murillo's class at UTAH.