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Discussion

Sonochemical activation promotes a reaction through

  • A.cavitation producing local extremes of temperature and pressure
  • B.direct absorption of sound by the reacting bonds
  • C.a lowering of the reaction's activation energy
  • D.the removal of dissolved gases from the solvent

Answer: A

Bubbles form and collapse violently, and the conditions inside them for a fraction of a microsecond drive chemistry the bulk temperature would not. It is particularly useful for heterogeneous reactions with a solid reagent.

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