Equlibrium constant?

Question

At a 25oC, the equilibrium constant for the formation of HI (g) is 6.

H2 (g) + I2 (g) ó 2HI (g)

If one mole of H2 and 1 mole of I2 are introduced into a 1.00 L flask what is the composition at equilibrium?

What is it asking and how would i attemp this problem?

Answer 1

They're asking what the question is asking: what is the composition at equilibrium or if you want it re-worded, what are the concentrations or quantities of each species at equilibrium.

Make an ICE table.

..H2 + I2 <--> 2HI

____________

I.. 1.....1 ........0

C -x....-x ......+2x

E1-x....1-x       2x

Keq = [HI]² / ([H2][I2]) = (2x)² / (1-x)² = 6

Solve for x, then plug it back into the "E" in the ICE table to solve for each value.

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