Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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An experiment involves the rxn: 2HI(g) ⇄ H2(g) + I2(g).
A sample of pure HI was placed inside a rigid container at a certain temperature. The table provides the initial and equilibrium concentrations for some of the substances in the rxn. Based on the data, which of the following is the value of the equilibrium constant (Keq) for the reaction, and why?
- Keq= 2.5×10−1, because [I2]eq = 2×[HI]eq.
- Keq= 6.3×10−2, because [I2]eq = ½ [HI]eq.
- Keq= 1.6×10−2, because [I2]eq = [H2]eq.
- Keq= 3.1×10−2, because [I2]eq = 2×[H2]eq.
Transcribed Image Text:2HI (g) + H2 (g) +2(g)
Equilibrium
Conc (M)
Sub-
Initial
stance Conc (M)
HI
0.30
0.24
H2
0.00
0.03
12
0.00
?
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