Chemistry question!

Question

 

 

 

 

 

 

 

 

 

Options:

 

[AB3?]2 /?[A2?]2 [B]6
[A2?] • 3 • [B2?] /?(2 • [AB3?]?)
[AB3?]2 /?[A2?] [B2?]3

OR
[A2?] [B2?]3 /?[AB3?]6

 

 

Answer 1

The equilibrium value is the products over the reactants. each raised to their molar value. The equation has 2AB₃ as a product, and A₂ and 3B₂ as the reactants. AB₃ will be squared and in the numerator, A₂ will be in the denominator, and B₂ will be cubed and multiplied by A₂ in the denominator since both are on the reactant side.

 

K = [AB₃]²/[A₂]⋅[B₂]³