What is " NOT TRUE" about rate of a reaction?
Correct answer: A. Concentration of reactants does not affect the rate of a reaction
- A. Concentration of reactants does not affect the rate of a reaction
- B. Surface area of reactants affects rate of reaction
- C. Concentration affects rate of reaction
- D. Catalyst affects rate of a reaction
Explanation
The rate constant which is the proportionality constant that relates the rate of reaction with the concentrations of the reactants is not dependent on the concentration of the reactants.
This question appeared on the NUMS 2022 paper, which you can sit online with every answer explained.
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About Factors Affecting Rate of Reaction
Reaction rate depends on the nature and concentration of reactants, pressure for gases, temperature, surface area and catalysts. Collision theory explains these effects through collision frequency, orientation and activation energy, while questions often distinguish a catalyst's effect on reaction rate from its lack of effect on equilibrium composition.
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