an increase in temperature affects the reaction rate by\n○ decreasing the velocities of particles that…

an increase in temperature affects the reaction rate by\n○ decreasing the velocities of particles that collide in the reaction.\n○ increasing the number of molecules that have sufficient kinetic energy to react.\n○ increasing the number of molecules that have sufficient potential energy to react.\n○ decreasing the energy that particles need to overcome the energy activation barrier.

an increase in temperature affects the reaction rate by\n○ decreasing the velocities of particles that collide in the reaction.\n○ increasing the number of molecules that have sufficient kinetic energy to react.\n○ increasing the number of molecules that have sufficient potential energy to react.\n○ decreasing the energy that particles need to overcome the energy activation barrier.

Answer

Brief Explanations:

In chemical reactions, an increase in temperature makes particles move faster. This leads to more particles having enough kinetic energy to surpass the activation - energy barrier and react. Potential energy is not directly related to the effect of temperature on reaction rate in this context, and temperature doesn't decrease the activation energy. Also, it increases, not decreases, particle velocities.

Answer:

increasing the number of molecules that have sufficient kinetic energy to react.