Basic Chemistry (Chapters 1-16)

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CHEMISTRY 2002 NAME PROBLEM SET #30: Equilibrium DATE PERIOD Read Sections 18.4 – 18.6! 1. Define each of the following vocabulary terms: Le Châtelier’s principle free energy spontaneous reaction exergonic nonspontaneous reaction 2. For the reaction system 2 H 2 ( g ) + O 2 ( g ) 2 H 2 O ( g ) which has already reached equilibrium, predict the effect that each of the following changes will have on the position of the equilibrium. Tell whether the equilibrium will shift to the right, will shift to the left, or will not be affected. a. The pressure of hydrogen is increased by injecting 1.0 mol of hydrogen into the reaction vessel.
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Unformatted text preview: b. The amount of oxygen is decreased by addition of an “oxygen scrubber” (a chemical that absorbs oxygen). c. The water vapor is liquefied and removed. 3. The reaction in #2 above proceeds with a large decrease of free energy. The reaction is very slow at room temperature but occurs with explosive rapidity in the presence of a flame or ignition wire. Explain. 4. Is the reaction in #2 above exergonic or endergonic? Explain. ← →...
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This document was uploaded on 06/02/2010.

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