If we reverse the reaction for making NO, we have a reaction for the decomposition of NO:

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If we reverse the reaction for making NO, we have a reaction for the decomposition of NO: 2NO ⇆ N2 + O2

(a) Write the Keq expression for this reaction and for the reaction to form NO(N2 + O2 ⇄ 2NO).

(b) How is the Keq expression for the NO formation reaction related to the Keq expression for the NO decomposition reaction?

(c) The value of Keq for NO formation at 25 °C is 2.3 × 10–9. What is Keq for NO decomposition at 25°C? To which side does the equilibrium lie for the decomposition reaction?

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Introductory Chemistry Atoms First

ISBN: 9780321927118

5th Edition

Authors: Steve Russo And Michael Silver

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