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3. Chemical kinetics — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry3. Chemical kinetics1 Mark
MCQ
According to collision theory of reaction rates
  • A
    Every collision between reactant leads to chemical reaction
  • B
    Rate of reaction is proportional to velocity of molecules
  • C
    All reactions which occur in gaseous phase are zero order reaction
  • ✓
    Rate of reaction is directly proportional to collision frequency.
✓

Answer

Correct option: D.
Rate of reaction is directly proportional to collision frequency.
d
According to collision theory rate of reaction is proportional to the number of collisions per second. And all the collision will not result in formation of product. Only those collision where molecules have enough activation energy and proper orientation will lead to a chemical reaction.

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