In this question, all pressures are measured in atm. The equation represents the equilibrium between three gaseous substances X, Y and Z. X + 3Y ⇋ 2Z At temperature T₁, the numerical value of Kp, the equilibrium constant, is 2. At a higher temperature T2, the partial pressures at equilibrium are as shown. Which row is correct?

Ammonium sulfate, (NH₄)₂SO₄, and ammonium nitrate, NH₄NO₃, are used as fertilisers. These salts have different percen…

Which statements about reversible reactions are correct? 1 An increase in concentration of a reactant always increase…

Two moles of compound P were placed in a sealed container. The container was heated and P was partially decomposed to…

The table shows the physical properties of four substances. Which substance has a giant covalent structure?

At room temperature and pressure, H₂O is a liquid and H₂S is a gas. What is the reason for this difference of state?

The enthalpy change for a reaction can be calculated from values of: • enthalpies of formation, ∆Hᶠ • enthalpies of c…