NEET 2025 Chemistry | Chemical Kinetics | Mission 100 | DNA Learning

Join this Mission 100 session on Chemical Kinetics, one of the most crucial topics in NEET Chemistry. Understanding the rate of chemical reactions, reaction mechanisms, and factors affecting reaction rates is essential for scoring high in Physical Chemistry. This LIVE session will cover NCERT-based explanations, numerical problem-solving, and past NEET questions to give you a solid grip on Chemical Kinetics. 📌 Why Is Chemical Kinetics Important for NEET? Chemical Kinetics is a high-scoring yet concept-based topic in NEET Chemistry. It helps students understand: ✔ How fast reactions occur and their practical applications ✔ Order & Molecularity of reactions ✔ Rate laws and rate constants ✔ Temperature dependence (Arrhenius equation) 📌 Weightage in NEET: 2-3 questions (8-12 marks) 📌 Question Types: Concept-based, numerical, and graph-based questions 📌 Key Concepts Explained in This Session 1️⃣ Rate of a Chemical Reaction The rate of a reaction is the change in concentration of reactants or products per unit time. Rate = Δ[Reactant] / Δt ✔ Instantaneous Rate vs. Average Rate ✔ Units of Rate Constant (k) for Different Orders 📝 NEET Pro Tip: Which order reaction has a constant half-life? 👉 Answer: First-order reaction 2️⃣ Order & Molecularity of a Reaction Order of reaction: Sum of the exponents in the rate law equation. Molecularity: The number of reactant molecules involved in the rate-determining step. 📌 Examples: ✔ Zero-order reactions: [A] → Products (Rate = k) ✔ First-order reactions: A → B (Rate = k[A]) ✔ Second-order reactions: 2A → B (Rate = k[A]²) 📝 NEET Pro Tip: Which order reaction does not depend on concentration? 👉 Answer: Zero-order reaction 3️⃣ Integrated Rate Equations For different reaction orders, the integrated rate equations differ: ✔ Zero-order: [𝐴]=[𝐴]0−𝑘𝑡 ✔ First-order: 𝑙𝑛[𝐴]=𝑙𝑛[𝐴]0−𝑘𝑡 ✔ Second-order: 1/[𝐴]=1/[𝐴]0+𝑘𝑡 📝 NEET Pro Tip: Which graph is a straight line for a first-order reaction? 👉 Answer: ln[A] vs. time 4️⃣ Half-Life of a Reaction (t½) Zero-order: 𝑡½=[𝐴]0/2𝑘 First-order: 𝑡½=0.693/𝑘 📌 Significance: ✔ First-order reactions have constant half-life ✔ Used in radioactive decay problems 📝 NEET Pro Tip: Which factor affects half-life? 👉 Answer: Rate constant (k) 5️⃣ Arrhenius Equation & Activation Energy Arrhenius Equation: 𝑘=𝐴𝑒−𝐸𝑎/𝑅𝑇 Graph: ln𝑘 vs. 1/𝑇 gives a straight line 📌 Factors Affecting Reaction Rate: ✔ Temperature ✔ Concentration ✔ Catalyst 📝 NEET Pro Tip: How does a catalyst affect activation energy? 👉 Answer: Lowers activation energy (Ea), increasing reaction rate 📌 NEET Previous Year Questions (PYQs) on Chemical Kinetics 📌 Common NEET Questions: ❓ Which order reaction has a constant half-life? (First-order) ❓ What is the unit of k for a second-order reaction? (L mol⁻¹ s⁻¹) ❓ What is the effect of temperature on reaction rate? (Increases exponentially) ❓ What does the slope of ln k vs. 1/T graph give? (-Ea/R) 📌 Pro Tip: NEET frequently asks numerical problems on rate law, order of reaction, and activation energy. 📌 NEET 2025 Strategy for Chemical Kinetics ✅ Revise NCERT Thoroughly – Many NEET questions are direct NCERT-based. ✅ Practice Numericals Daily – Focus on rate laws, half-life, and Arrhenius equation. ✅ Understand Graphs – Be familiar with ln k vs. 1/T and concentration vs. time graphs. ✅ Solve PYQs & Mock Tests – Attempt at least 20-30 MCQs from this chapter. ⏳ Study Tip: Revise this chapter at least 2 times before the exam! Chemical Kinetics is a high-scoring yet conceptual topic in Physical Chemistry. Understanding reaction rates, activation energy, and order of reactions can boost your NEET Chemistry score. 🎯 This LIVE session will help you: 🔹 Master NEET-specific numerical problems 🔹 Revise the most important concepts in Chemical Kinetics 🔹 Learn time-saving tricks for solving questions 🚀 Don’t Miss This LIVE NEET 2025 Class on Chemical Kinetics! NEET, NEET 2025, NEET Chemistry, Chemical Kinetics, Reaction Rate, NEET important questions, NEET last-minute revision, NCERT Chemistry, NEET free live class, NEET online coaching, NEET study plan, NEET exam preparation, Rate law, Order of reaction, Molecularity, Arrhenius equation, Activation energy, NEET test series, Best Chemistry Class, NEET live session, NEET free mock test #neet2025exam #chemicalkinetics #neetchemistryexam #Mission100NEET #neetliveclasses #studywithdna #crackneet2025 #neetexamtips #neetrevision #neetpyqs #neetonlinecoaching #ratelaw #activationenergy #HalfLifeConcept #arrheniusequation #neetstrategy #bestchemistryclass #neettestseries #education #medicalentranceexam #neetmalayalam #neet2025