Answer:
k = 4,92x10⁻³
Explanation:
For the reaction:
AB₂C (g) ⇄ B₂(g) + AC(g)
The equilibrium constant, k is defined as:
[tex]k = \frac{[B_{2}][AC]}{[AB_2C]}[/tex] (1)
Molar concentration of the species are:
[AB₂C]: 0,0840mol / 5L = 0,0168M
[B₂]: 0,0350mol / 5L = 0,0070M
[AC]: 0,0590mol / 5L = 0,0118M
Replacing this values in (1):
[tex]k = \frac{[0,0070][0,0118]}{[0,0168]}[/tex]
k = 4,92x10⁻³
I hope it helps!