Water Can Decompose at an Elevated Temperature to Give Hydrogen $\leftrightarrows$

question 83

Multiple Choice

Water can decompose at an elevated temperature to give hydrogen and oxygen according to the equation below. At a particular temperature in a vessel containing water vapor and air, the partial pressures of H₂O, H₂, and O₂ are 0.055 atm, 0.0065 atm, and 0.19 atm, respectively. What is the value of the reaction quotient, Q_P, for this reaction under these conditions?
2H₂O(g) $\leftrightarrows$ 2H₂(g) + O₂(g)

• A) 0.023
• B) 1.5 *10^-4
• C) 2.7 *10^-3
• D) 370
• E) 4.4 * 10⁴

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