2KClO\(_3\)(s) → 2KCl(s) + 3O\(_2\)(g)

The importance of the catalyst in the reaction above is that

  • A heating may not be required before the reaction takes place
  • B the reaction is controllable even at a high temperature
  • C the reaction produces large quantity of oxygen
  • D the reaction takes place more rapidly at a lower temperature
jamb 2018chemistry

The correct answer is D. the reaction takes place more rapidly at a lower temperature

A catalyst is a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible.

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