Hydrogen Iodide Decomposes According to the Equation 2HI(g) H₂(g)

question 43

Multiple Choice

Hydrogen iodide decomposes according to the equation 2HI(g) H₂(g) + I₂(g) ,for which K_c = 0.0156 at 400ºC.Suppose 0.550 mol HI is injected into a 2.00-L reaction vessel at 400ºC.What is the concentration of HI at equilibrium?

• A)0.138 M
• B)0.220 M
• C)0.550 M
• D)0.275 M
• E)0.0275 M

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