Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2003ChemistryChemical KineticsActual

The temperature dependence of rate constant (k) of a chemical reaction is written in terms of Arrhenius equation, k = A e^ - Ea / RT . Activation energy ( E _a ) of the reaction can be calculated by ploting:

Options

  1. Ak vs T
  2. Bk vs 1 T
  3. Ck vs 1 T
  4. Dk vs 1 T

Correct answer

C. k vs 1 T

Step-by-step solution

We can calculate the Activation Energy by graphing ln k versus 1/T. When the k (rate constant) is plotted versus the inverse of the temperature (kelvin), the slope is a straight line. The value of the slope ( m ) is equal to - Ea / R where R is a constant equal to 8.314 ~J / mol - K .

Practice Chemical Kinetics on Quantrex Academy →

More from Chemical Kinetics

The combination of NO ₂(g) and CO (g) occurs in two steps as follows: What is the rate law for the reaction? 2 NO ₂ NO + NO ₃(k₁) - slow NO ₃ + CO CO ₂ + NO ₂(k₂) - fast 2026The slope of the graph [ A ]_t against time for zero order reaction is 2026For the reaction C ₂ H ₅ Br _ (l) C ₂ H _ 4(g) + HBr , r = K( C ₂ H ₅ Br ) What is order and molecularity of the reaction respectively ? 2026The decomposition of N ₂ O _ 5(g) occurs as: 2 N ₂ O _ 5(g) 4 NO _ 2(g) + O _ 2(g) . If initial concentration of N ₂ O _ 5(g) is 1.63 10⁻² mol L ⁻¹ and after 400 seconds it is 1.36 2026Which of the following statements represents rate of reaction? 2026What is the order of reaction for the following? 2 H ₂ O ₂(l) 2 H ₂ O (l) + O ₂(g) 20262 A k B is a zero-order reaction, where k=1.0 mol L ⁻¹ min ⁻¹ . If the initial concentration of A is 2 M, then the time taken to complete 75 % of the reaction will be 2026Match List I with List II : List I (Order of reaction) List II (Unit of rate constant) A. Zero order I. mol ⁻¹ L s ⁻¹ B. First order II. mol ⁻² L ² s ⁻¹ C. Second order III. s ⁻¹ D 2026 Full Chemical Kinetics list All NEET PYQs