The Reaction Quotient Video Lessons

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Example

Problem: Consider the gas-phase reaction, N2(g) + 3 H2(g) <=> 2 NH3 (g), for which Kp = 43 at 400 K. If the mixture is analyzed and found to contain 0.185 bar of N2, 0.36 bar of H2 and 0.55 bar of NH3, described the situation.

FREE Expert Solution

We are being asked to identify the shift produced in the system with the given partial pressures. We will use the reaction quotient, Q, to determine if the chemical reaction would be at equilibrium or not. The formula for Q is:

Q = productsreactants


Depending on if Q is greater than or less than K, our reaction will shift to attain equilibrium by reaching the equilibrium constant K:


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Problem Details

Consider the gas-phase reaction, N2(g) + 3 H2(g) <=> 2 NH3 (g), for which Kp = 43 at 400 K. If the mixture is analyzed and found to contain 0.185 bar of N2, 0.36 bar of H2 and 0.55 bar of NH3, described the situation.

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