After 4.00 mol of C2H4(g) and 2.50 mol of Br2(g) are placed in a sealed 1.0L con

Question

After 4.00 mol of C2H4(g) and 2.50 mol of Br2(g) are placed in a sealed 1.0L container, the reaction reaches equilibrium and is written as following:

Calculate the equilibrium concentrations of all three substances if the concentration of at C2H4 (g) equilibrium is 2.50 mol/L. Please show all your works. Thanks!

After 4.00 mol of C2H4(g) and 2.50 mol of Br2(g) are placed in a sealed 1.0L container, the reaction reaches equilibrium and is written as following: Calculate the equilibrium concentrations of all three substances if the concentration of at C2H4 (g) equilibrium is 2.50 mol/L.

Explanation / Answer

the initial conentrations are 4mol/L and 2.50mol/L of c2h4 and Br2 respectively

suppose at equilbrium conc of c2h4 is 4-x

then of br2 will be 2.5-x

and conc of c2h4br2 will be x

since we know that the eq conc of c2h4 is 2.5

4-x=2.5

x=1.5

so the eq. conc of c2h4br2 will be 1.5

and of br2 will be 2.5-x=2.5-1.5=1

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