p-Block Elements-II - Formula Sheet

Key Chemical Formulas and Processes

• Ozone Formation: \(3O_2 \xrightarrow{electric \, discharge} 2O_3\) (Energy must be supplied for this endothermic reaction).
• Contact Process (Sulfuric Acid):
  • \(2SO_2 + O_2 \rightleftharpoons 2SO_3\) (using \(V_2O_5\) catalyst).
  • \(SO_3 + H_2SO_4 \rightarrow H_2S_2O_7\) (Oleum).
  • \(H_2S_2O_7 + H_2O \rightarrow 2H_2SO_4\).
• Interhalogen Types: \(XX'_n\) where \(n = 1, 3, 5, 7\) and \(X\) is less electronegative than \(X'\).
• Xenon Fluorides:
  • \(Xe + F_2 \rightarrow XeF_2\) (Excess Xe).
  • \(Xe + 2F_2 \rightarrow XeF_4\) (\(1:5\) ratio).
  • \(Xe + 3F_2 \rightarrow XeF_6\) (\(1:20\) ratio).
• Oxoacids of Sulfur:
  • Sulfurous acid: \(H_2SO_3\).
  • Sulfuric acid: \(H_2SO_4\).
  • Peroxomonosulphuric acid (Caro's acid): \(H_2SO_5\).
  • Peroxodisulphuric acid (Marshall's acid): \(H_2S_2O_8\).