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What Is the Relationship Between the Changes in the Concentration

Question 27

Multiple Choice

What is the relationship between the changes in the concentration of NO2 and O2 as the following reaction comes to equilibrium?

2 NO2(g) What is the relationship between the changes in the concentration of NO<sub>2</sub> and O<sub>2</sub> as the following reaction comes to equilibrium?  2 NO<sub>2</sub>(g)    2 NO(g)  + O<sub>2</sub>(g)    K<sub>c</sub> = 7.4 x 10<sup>-16</sup>   (at 25°C)  A)  [NO<sub>2</sub>] = -[O<sub>2</sub>] B)  [NO<sub>2</sub>] = -2 [O<sub>2</sub>] C)  [O<sub>2</sub>] = -2 [NO<sub>2</sub>] D)  There is no relationship between the changes in the concentrations of these substances. E)  none of the above 2 NO(g) + O2(g)   Kc = 7.4 x 10-16   (at 25°C)


A) [NO2] = -[O2]
B) [NO2] = -2 [O2]
C) [O2] = -2 [NO2]
D) There is no relationship between the changes in the concentrations of these substances.
E) none of the above

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