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Bromine and chlorine gas react to give bromine monochloride (BrCl) according to

Br2(g)+Cl2(g)⇌2BrCl(g)

Given initial concentrations [Br2]=1.50 mol L-1, [Cl2]=0.90 mol L-1 and [BrCl]=0 and K=7 determine (to two decimal places) the equilibrium concentration of BrCl in mol L-1

1 answer

7=(x)^2/(1.5-x)(.9-x)

do the algebra, get a quadratic , use the quadratic equation to solve for x.
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