During homogeneous catalysis, if a catalyst is present in the liquid phase, which phase must the reactants be in?

The reactants must be in the liquid phase.

Explanation:

Homogeneous means that something is of the same nature.

In the context of catalysis, it means that the catalyst and the reactants are in the same phase.

If the catalyst is in the solid phase, the reactants are solids are well.

If the catalyst is in the liquid phase, then the reactants are also in the liquid phase.

And so on.

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