Equilibrium constant, Kp - A-level chemistry question walk through

This question challenges your knowledge of year 1 and year 2 equilibria.

The first part of the video explains how to work out equilibrium amounts from initial amounts. This is relevant to both year 1 and year 2 A-level chemistry students.

The equilibrium amounts are then used to find mole fractions and partial pressures. Equilibrium constant is found (with units) form the Kp expression using partial pressures.

Black text - the question
Red text - explanation
Blue text - model answer