Question

Some chemical reactions takes place in the presence of a catalyst.

Give reason.​

Answer 1

Explanation:

In general, chemical reactions occur faster in the presence of a catalyst because the catalyst provides an alternative reaction pathway - or mechanism - with a lower activation energy than the non-catalyzed mechanism.

Answer 2

Answer:

in general chemical reactions occur faster in the presence of a catalyst

because the catalyst provides an alternative reaction pathway or mechanism with a lower activation energy than the non catalysed