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  3. the equilibrium constant kc is 1.6 × 105 at 12

The equilibrium constant Kc is 1.6 × 105 at 1297 K and 3.5 × 104 at...

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Chemistry

The equilibrium constant Kc is 1.6 ×105 at 1297 K and 3.5 × 104 at 1495 K for thereaction

H2(g) + Br2(g) ⇌ 2HBr(g)

a. Is ΔrH° for this reaction positive ornegative?

b. Calculate Kc at 1297 K for the reaction

1/2H2(g) + 1/2Br2(g) ⇌ HBr(g)

c. Pure HBr is placed into an evacuated container of constantvolume. The container is sealed and heated to 1297 K. Calculate the percentage of HBr that isdecomposed to H2 and Br2 at equilibrium.

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