Chemical Kinetics — Practice Quiz
Maharashtra Board · Class 12 · Chemistry
Try a 4-question quiz on Chemical Kinetics for Maharashtra Board Class 12 Chemistry: tap an answer to check it and see why.
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Quick Quiz: Chemical Kinetics
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What is the unit of rate constant for a first order reaction?
For the reaction 2A → B + C, if the rate of formation of B is 0.05 mol dm⁻³ s⁻¹, what is the rate of consumption of A?
What is the overall order of reaction for rate = k[A]²[B]?
Which of the following represents the Arrhenius equation?
Sample Questions
Which factors affect the rate of a chemical reaction? (Select all correct answers)
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Temperature, Concentration of reactants, Presence of catalyst, Surface area of solid reactants
Temperature increases molecular motion, higher concentration increases collision frequency, catalysts provide alternate pathways with lower activation energy, and larger surface area increases contact between reactants.
The half-life of a first order reaction is independent of initial concentration.
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True
For first order reactions, t₁/₂ = 0.693/k, which depends only on the rate constant k, not on initial concentration [A]₀.
Match the following reaction types with their characteristics:
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Zero order → Rate independent of concentration
Each order has distinct characteristics: zero order shows constant rate, first order is directly proportional to concentration, second order is proportional to square of concentration, and pseudo-first order occurs when one reactant is in excess.
What is activation energy?
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Minimum energy required for reaction to occur
Activation energy is the minimum kinetic energy that colliding molecules must possess for a successful reaction to occur.
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