What effects does the concentration of reactants have on the rate of a reaction ?

Question:

What effects does the concentration of reactants have on the rate of a reaction?

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.

Increasing the concentration of reactants generally increases the rate of reaction because more of the reacting molecules or ions are present to form the reaction products. ... When concentrations are already high, a limit is often reached where increasing the concentration has little effect on the rate of reaction.

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metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)