Class 12 | Chemistry | CBSE | Sample Paper Discussion | Section C | Important Questions | 2027🔥

📚 SECTION C — Quick Concept + Formula Revision 🔹 Q22 | Acid-Catalysed Hydration Alkene + H₂O → Alcohol via carbocation mechanism. Markovnikov addition is followed. 🔹 Q23 | Ionic Equations Balance atoms + charges and remove spectator ions. Redox: Oxidation = loss of e⁻ | Reduction = gain of e⁻. 🔹 Q24 | Sₙ1 + Wurtz–Fittig Sₙ1 is favoured by 3° carbocation stability. Wurtz–Fittig: Ar–X + R–X + 2Na → Ar–R + 2NaX 🔹 Q25 | Colligative Properties ΔTᶠ = Kᶠm m = moles of solute / kg of solvent M = Kᶠ × w₂ × 1000 / (ΔTᶠ × w₁) 🔹 Q26 | Chemical Kinetics Rate = k[A]ᵐ[B]ⁿ Order = m + n Rate constant: k = Rate / [A]ᵐ[B]ⁿ 🔹 Q27 | Amines – Basicity Basicity depends on +I effect, resonance & solvation. pKᵦ = −log Kᵦ Lower pKᵦ → stronger base. 🔹 Q28 | Arrhenius Equation k = Ae⁻ᴱᵃ/ᴿᵀ log(k₂/k₁) = Eₐ/2.303R × (T₂−T₁)/(T₁T₂) Higher T → higher k → faster reaction. #Class12Chemistry #CBSE #SectionC #ImportantFormulas #ChemistryRevision #SamplePaper #boardexam2027