You will get here Chemistry Class 12 CBSE Notes and MCQs Chapter 3: Chemical Kinetics . You can connect with us for every important update related to class 12.
Chemistry is a very important subject for your board exam because it will help you increase your percentage and give big support in your entrance exam like JEE and NEET. You can score high marks in this subject by studying notes and practicing MCQs. In this post, we will cover Chapter 3: Chemical Kinetics .
🔹 Rate of Reaction (Average & Instantaneous) 🔹 Factors Affecting Rate of Reaction 🔹 Factors Affecting Rate of Reaction 🔹 Order of Reaction 🔹 Molecularity of Reaction 🔹 Rate Law 🔹 Specific Rate Constant (k) 🔹 Integrated Rate Equation 🔹 Half-Life (t½) 🔹 Collision Theory (Basic Idea) 🔹 Activation Energy (Ea)
Class 12 Chemistry Chapter 3: Chemical Kinetics Notes
CBSE Class 12 Chemistry – Unit 3
Chemical Kinetics (Rate of Reaction, Order, Arrhenius Equation)
Complete Class 12 Chemistry Unit 3 (Chemical Kinetics) notes, syllabus,
NCERT book PDF aur official Telegram channel ka direct access yahan se milega.
Isme rate of reaction, factors affecting rate, order & molecularity,
rate law, integrated rate equation, half-life, collision theory,
activation energy aur Arrhenius equation cover hai.
Chemistry Chapter 3 Chemical Kinetics Quick Revision
🔹 Rate of Reaction (Average & Instantaneous) Reaction ki speed ko rate kehte hain — average rate time interval me change batata hai, instantaneous rate kisi specific moment par exact speed batata hai.
🔹 Factors Affecting Rate of Reaction Reaction rate concentration, temperature aur catalyst par depend karti hai — zyada collisions → faster reaction.
🔹 Order of Reaction Rate law me reactant concentration ke powers ka sum reaction ka order hota hai.
🔹 Molecularity of Reaction Elementary step me react karne wale molecules ki number molecularity kehlati hai (always whole number).
🔹 Rate Law Reaction rate aur reactant concentration ka mathematical relation rate law hota hai. 👉 Rate = k[A]ᵐ[B]ⁿ
🔹 Specific Rate Constant (k) Rate constant reaction ki speed ka measure hai jab reactant concentration unity ho.
🔹 Integrated Rate Equation Time ke saath reactant concentration ka change batane wali equation (zero aur first order reactions ke liye).
🔹 Half-Life (t½) Reactant ki initial quantity ka half hone me lagne wala time.
🔹 Collision Theory (Basic Idea) Reaction tab hoti hai jab molecules sufficient energy aur proper orientation ke saath collide karein.
🔹 Activation Energy (Ea) Reaction start karne ke liye minimum required energy barrier.
Rate of reaction is the change in concentration of reactants or products per unit time.
2. What is the difference between average and instantaneous rate?
Average rate is calculated over a time interval, while instantaneous rate is the rate at a particular instant and is obtained from the slope of the tangent to the concentration-time curve.
3. What factors affect the rate of reaction?
The main factors affecting rate are concentration, temperature and catalyst.
4. What is order of reaction?
Order of reaction is the sum of powers of concentration terms in the rate law expression.
5. What is molecularity of reaction?
Molecularity is the number of reacting species that collide simultaneously in an elementary reaction.
6. What is activation energy?
Activation energy is the minimum energy required for reactant molecules to form an activated complex and start the reaction.
7. What is Arrhenius equation?
Arrhenius equation relates rate constant with temperature: k = A e-Ea/RT, where Ea is activation energy.
8. What is half-life of a reaction?
Half-life is the time required for the concentration of a reactant to become half of its initial value.
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