Which action would speed up a chemical reaction in aqueous solution?

adding more powdered reactants

adding excess cold water

removing a catalyst

cooling the reaction mixture

adding more powdered reactants

Explanation:

Powdered reactants talks about surface area of the reactant. Surface affects the rate of the reaction. So the larger the surface area, the faster the reaction.

From the question, adding more powered reactants will definitely speed up the rate of the reaction

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