The reaction pathway diagram for the catalysed reaction and the uncatalysed reaction between N₂ and H₂ is shown. N₂(g) + 3H₂(g) ⇌ 2NH₃(g) [Reaction pathway diagram] Which letter represents the activation energy for the first step in the decomposition of NH₃ in the presence of a catalyst?

The equation for a chemical reaction is shown. All substances are in their standard states. XeF₆ + 3H₂O → XeO₃ + 6HF …

The following data are needed for this question. NaHCO3(s) + HCl(aq) → NaCl(aq) + H2O(l) + CO2(g) ΔH = -38.97 kJ m…

A reaction between carbon and oxygen is shown. C(s) + ½O2(g) → CO(g) How can the standard enthalpy change of this rea…

In the redox reaction shown, how do the oxidation states of vanadium and sulfur change? VO2+ + SO2 → V3+ + SO42-

The equation for the reaction between silver chloride and aqueous ammonia is shown. AgCl(s) + 2NH3(aq) ⇋ [Ag(NH3)2]+(…

Sodium azide, NaN3, decomposes as shown. 2NaN3 → 2Na + 3N2 Which volume of nitrogen, measured at room temperature and…