Chem102-Chap_14

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Unformatted text preview: O2 (g) 2.0 x10-6 M ¾¾ ® ¬¾ ¾ 2.0 x10-6 M much smaller 2 NO2 (g) 1.8 x10-2 M much larger Example 2: Sulfur dioxide reacts with oxygen at 25 °C to reach equilibrium. Kc for this reaction at this 3 temperature is 8.0x10 5 . ¾¾ ® O2 (g) ¬¾ 2 SO3 (g) ¾ a) From the magnitude o f Kc, which react ion is favored (forward or reverse) when equilibrium is established? 2 SO2 (g) + b) If an equilibrium mixture is 1.0 M SO3 and has equal concentrations of SO2 and O2, what is the concentration of SO2 in the mixture? Does this result agree with what you expect fro m the magnitude of Kc? 14 Chemistry 102 Chapter 14 PREDICTING THE DIRECTION OF REACTION · Consider the fo llowing reaction and the fo llowing composit ion of gas mixture present. ¾¾ ® CO (g) + 3 H2 (g) ¬¾ ¾ (1200 K) Composit ion of gas mixture: (NOT AT EQUIL) CH4 (g) + H2O (g) Kc = 3.93 0.0200 M 0.0200 M 0.00100 M 0.00100 M At 1200K and in the presence of a catalyst, what would be more likely ? 1. Would forward reaction be favored? (would products be favored?) OR 2. Would...
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This document was uploaded on 03/18/2014 for the course CHEM 102 at Los Angeles Mission College.

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