which will increase the rate of a chemical reaction?\n1. adding a catalyst\n2. decreasing the pressure\n3…

which will increase the rate of a chemical reaction?\n1. adding a catalyst\n2. decreasing the pressure\n3. decreasing the temperature\n4. removing a catalyst
Answer
Brief Explanations:
A catalyst lowers the activation - energy of a chemical reaction, increasing the rate of the reaction. Decreasing pressure and temperature generally decrease the reaction rate. Removing a catalyst would not increase the rate.
Answer:
A. adding a catalyst