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Hydrogen Iodide Decomposes According to the Equation 2HI(g)

Question 38

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Hydrogen iodide decomposes according to the equation 2HI(g) Hydrogen iodide decomposes according to the equation 2HI(g) <sub> </sub> H<sub>2</sub>(g) + I<sub>2</sub>(g) , for which K<sub>c</sub> = 0.0156 at 400ºC. 0.550 mol HI was injected into a 2.00 L reaction vessel at 400ºC.Calculate the concentration of H<sub>2</sub> at equilibrium. A) 0.275 M B) 0.138 M C) 0.0275 M D) 0.0550 M E) 0.220 M H2(g) + I2(g) , for which Kc = 0.0156 at 400ºC. 0.550 mol HI was injected into a 2.00 L reaction vessel at 400ºC.Calculate the concentration of H2 at equilibrium.


A) 0.275 M
B) 0.138 M
C) 0.0275 M
D) 0.0550 M
E) 0.220 M

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