Question

A student wants to calculate the reaction quotient, Q, for the following chemical reaction at 298 K:2H2(g) + O2(g) ⇌ 2H2O(g)If the partial pressures of H2, O2, and H2O are 0.25 atm, 0.15 atm, and 0.1 atm, respectively, what is the value of Q?

Answer 1

To calculate the reaction quotient, Q, we need to use the expression for Q based on the balanced chemical equation:Q = [H2O]^2 /  [H2]^2 * [O2] Here, the concentrations are given in terms of partial pressures. So, we can plug in the given values:Q =  0.1 ^2 /   0.25 ^2 *  0.15  Q = 0.01 /  0.0625 * 0.15 Q = 0.01 / 0.009375Q  1.067Therefore, the value of Q for this reaction at 298 K with the given partial pressures is approximately 1.067.