# Problem: 1.75 moles of H2O2 were placed in a 2.50 L reaction chamber at 307ºC.  After equilibrium was reached, 1.20 moles of H2O2 remained.  Calculate the equilibrium constant, Kc, for the reaction 2 H2O2(g) ⇋ 2 H2O(g) + O2(g). A)  2.0 x 10–4    B)  2.3 x 10–2    C)  2.4 x 10–3    D)  5.5 x 10–3    E)  3.9 x 10–4

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1.75 moles of H2O2 were placed in a 2.50 L reaction chamber at 307ºC.  After equilibrium was reached, 1.20 moles of H2O2 remained.  Calculate the equilibrium constant, Kc, for the reaction

2 H2O2(g) ⇋ 2 H2O(g) + O2(g).

A)  2.0 x 10–4

B)  2.3 x 10–2

C)  2.4 x 10–3

D)  5.5 x 10–3

E)  3.9 x 10–4

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