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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

At some temperature. Kc = 33 for the reaction

H2(g) + I2(g) ⇄ 2 HI(g)

Assume the initial concentrations of both H2 and I2 are 6.00 × 10−3 mol/L. Find the concentration of each reactant and product at equilibrium.

Interpretation Introduction

Interpretation: Equilibrium concentration of the reactant and product has to be identified.

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

Explanation

The equilibrium constant Kc=[HI]2[H2][I2]

EquationH2I2 2HI
Initial concentration6.00×10-3M 6.00×10-3M 0
Change concentrationx x 2x
Equilibrium concentration6.00×10-3M-x 6.00×10-3M-x +2x

Substitute in Kc equation

33=(+2x)2(6

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