Inhibitor
An inhibitor decreases the reaction rate
It depends entirely on the particular reaction. See the Related Questions link for more about reaction rates.
The concentration of the reactants decreases.
The rate decreases as reactants are used up.
A catalyst is a material that speeds up a chemical reaction by providing an alternative pathway with lower activation energy. Alternatively, an inhibitor is a material that slows down a chemical reaction by blocking the active sites on the reactant molecules, preventing them from coming together or reacting.
The concentration of the reactants decreases.
Inhibitor~a material used to decrease the rate of reaction
In general, and depending on the order of the reaction, the rate will decrease as the reaction progresses.
The reaction rate decreases as the reaction progresses primarily due to the depletion of reactants; as they are consumed, there are fewer molecules available to collide and react. Additionally, the accumulation of products can create a reverse reaction that competes with the forward reaction, further slowing the rate. Factors such as changes in temperature or concentration can also influence the reaction rate as the system approaches equilibrium.
The rate goes down.
The reaction rate depends on the order of the reaction. In general (except for zero order), as the reaction progresses, the rate decreases with time.
increasing the concentration increases the rate of the reaction