Question

A mixture of 3.00 volumes of H2 and 1.00 volume of N2 reacts at 344 C to form ammonia. The equilibrium mixture at 110.0 atm contains 47.00 % NH3 by volume. Calculate Kp for the reaction, assuming that the gases behave ideally.

Answer 1

Oh.. I figured it out. So you should do stoichiometry in ratios, very accurately, by solving for the one unknown in the end. Then just multiply found ratios by 110 and find Kp from the equilibrium pressures.

Answer 2

I'm not understanding what you mean "ratios in the end" but if you want to post your work/answers I can check it. I went through mole fractions and calculated partial pressure of each gas, substituted that into the Kp expression and solve for Kp.