Question

Consider the following reaction: A(Aq) <-----> 2B (aq) Kc= 5.75x10^-6 at 500k If a 4.80 M...

Consider the following reaction: A(Aq) <-----> 2B (aq) Kc= 5.75x10^-6 at 500k

If a 4.80 M sample of A is heated to 500 K, what is the concentration of B at equilibrium?

[B]= ? M

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Answer #1

A(Aq) <-----> 2B

4.80                0              initial

4.80-x             2x             equilibrium

Kc = [B]^2/[A]

5.75*10^-6 = (2x)^2/(4.80-x)

x = 0.00262

[B]= 2x = 2*0.00263 = 0.00526 M

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