Essential Chemistry for IGCSE - Rate Of Reaction (Section 2 - No. 22)
According to collision theory, what must occur for a reaction to take place?
Reactant molecules must collide with sufficient energy.
Reactant molecules must collide with the correct orientation.
Reactant molecules must collide with sufficient energy and the correct orientation.
Reactant molecules must not collide with sufficient energy and the correct orientation.
Explanation
For a reaction to occur, colliding molecules must have enough energy (greater than the activation energy) and must be in the correct orientation.
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