- #1

Coco12

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## Homework Statement

consider the following reaction: 2H2O(i) <-> 2H2(g) + O2(g)

kc=7.3*10^-18 at 1000oC

The initial concentration of water in a reaction vessel is 0.055 mol/L. What is the equilibrium concentration of H2(g) at 1000oC?

## Homework Equations

h20 h2 02

I 0.055 0 0

C -2x +2x +x

E0.055-2x 2x x

## The Attempt at a Solution

The equation I got is:

-4x^3+2.92*(10^-17) x^2 -1.606*(10^-18) x +2.20825*10^-20 =0

How do I solve it if it is a cubic function?