Problem: Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)Complete the following table. Assume that all concentrations are equilibrium concentrations in M.T(oC)  [H2] (M)left[ {{f{H}}_{f{2}} } ight]   [I2] (M) left[ {{f{I}}_{f{2}} } ight] [HI] (M) left[ {{f{HI}}} ight]   Kcleft[ {{f{K}}_{f{c}} } ight]25  0.0355  0.0388 0.922   –340- 4.60×10−2  0.390 90.6 445 4.90×10−2  4.72×10−2     – 50.2Find Kc at 25 oC.

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 H2(g) + I2(g) ⇌ 2HI(g)

The formula for the equilibrium constant Kc is simply the concentration of the products over the concentration of the reactants with the coefficient of the balanced reaction as the exponent of each concentration term. 

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Problem Details

Consider the following reaction: H2(g) + I2(g) ⇌ 2HI(g)
Complete the following table. Assume that all concentrations are equilibrium concentrations in M.

T(oC)  [H2] (M)   [I2] (M)  [HI] (M)    Kc
25  0.0355  0.0388 0.922   –
340- 4.60×10−2  0.390 90.6 
445 4.90×10−2  4.72×10−2     –
 50.2


Find Kc at 25 oC.

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Based on our data, we think this problem is relevant for Professor Bryant's class at USC.