CBSE Class 12 · 2000 · Delhi Compartment · Chemical KineticsVery Short Answer

WhatsApp Email
Why is it that the instantaneous rate of a reaction does not change when a part of the reacting solution is taken out?

Solution

The instantaneous rate is governed by the molar concentrations of the reactants (rate = k[A][B]), and concentration is an intensive property.
Taking out a part of the solution does not change the concentrations of the species in the remaining solution, so the rate stays the same.

CBSE Class 12 Board · 2000 · Delhi Compartment · Subjective

More board questions on Chemical Kinetics

  1. The rate of a reaction increases sixteen times when the concentration of the reactant increases four times. The order of the reaction is
    CBSE 2024View solution →
  2. Assertion (A): The units of the rate constant of a zero order reaction and of the rate of reaction are the same.
    Reason (R): In a zero order reaction, the rate of reaction is independent of the concentration of the reactants.
    CBSE 2024View solution →
  3. Show that in the case of a first order reaction, the time taken for completion of 99% of the reaction is twice the time required for 90% completion of the reaction. (log 10 = 1)
    CBSE 2024View solution →
  4. The rate constant of a reaction quadruples when the temperature changes from 300 K to 320 K. Calculate the activation energy for this reaction. (log 2 = 0.30, log 4 = 0.60, 2.303 R = 19.15 J K mol)
    CBSE 2024View solution →
  5. What happens to the rate constant k and the activation energy E as the temperature of a chemical reaction is increased? Justify.
    CBSE 2023View solution →
  6. (a) For the reaction at 318 K, calculate the rate of reaction if the rate of disappearance of NO(g) is M s.
    (b) For a first order reaction, derive the relationship t = 2 t …
    CBSE 2023View solution →