How does increasing the concentration of one of the reactants affect the reaction?

It speeds up the reaction by acting as a catalyst.

It speeds up the reaction by supplying more activation energy.

It speeds up the reaction by supplying more particles to react.

It slows down the reaction by making the reaction unbalanced.

Increasing the concentration of one of the reactants typically speeds up the reaction by providing more particles for the reaction to occur. This is because an increase in concentration means more collisions between reactant particles, leading to a higher likelihood of successful collisions and faster reaction rates.