Answered: N₂(g) + O₂(g)…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 61QRT

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Question

Consider the equilibrium system described by the chemical reaction below, which has a value of Kc equal to 4.10 × 10⁻⁴ at a high temperature. If 0.20 mol N₂ and 0.15 mol O₂ react in a 1.0 L vessel, what will the equilibrium concentration of O₂ be?

N₂(g) + O₂(g) ⇌ 2 NO(g)

Set up the expression for Qc and then evaluate it to determine the direction of the reaction. Do not combine or simplify terms.

Qc= (_______) / (_______) = (______)

Based on the given values and your value for Qc, set up ICE table in order to determine the unknown.

	N₂(g) + O₂(g) ⇌ 2 NO(g)
Initial (M)
Change (M)
Equilibrium (M)

Based on your ICE table, set up the expression for Kc in order to determine the unknown. Do not combine or simplify terms.

Kc = (________) / (_______)= 4.10 × 10⁻⁴

Based on your ICE table and expression for Kc, solve for the concentration of O₂ at equilibrium.

[O₂]eq = _____M

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