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The equilibrium constant for the reaction shown here is Kc=5.0×102. A reaction mixture at equilibrium contains [A]=1.0×10−3M. What is the concentration for the B mixture?


A(g)⇌B(g)


Here are the choices:

A. 1.0×10−3M

B. 5.0×102M

C. 1.0 M

D. 0.50 M

Respuesta :

onyebuchinnaji

D. The concentration for the B mixture is 0.5 M.

concentration for the B mixture

kc = [B]/[A]

where;

  • kc is  equilibrium constant
  • A is the concentration for the A mixture
  • B is the concentration for the B mixture

B = kc(A)

B = (5x 10²)(1 x 10⁻³)

B = 0.5 M

Thus, the concentration for the B mixture is 0.5 M.

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