or Natalie T Long Indiana University of pe X ibisoms/mod/ibis/view.php?id 316431

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or Natalie T Long Indiana University of pe X ibisoms/mod/ibis/view.php?id 3164317 3/23/2017 11:55 PM 7s 6/100 3/23/2017 01:49 PM e Periodic Table Question 7 of 15 CM Sapling Learning Map The elementary reaction ,ok) 2H proceeds at a certain temperature until the partial pressures of Hizo, Hz. and ozreachoo350 atm, 0.00400 and 0.00900 atm respectively. What is the value of the equilibrium constant at this temperature? o Check Answer ONext aExit Previous Start by writing the equilibrium-constant expression of this reaction in terms of partial pressures. Remember that products appear in numerat appear in the each raised to the power of "s coefficient in the balanced chemical equation.

Explanation / Answer

In equilibrium:

P-H2O = 0.035 atm

P-H2 = 0.004 atm

P-O2 = 0.009 atm

and we know that

Kp = Pproducts / Preactants

Kp = (P-H2)^2 ( P-O2) / (P-H2O)^2

substitute all values

Kp = (0.004 ^2)(0.009) / (0.035 ^2)

Kp = 0.00011755

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