Question

which concept explains why increasing the temperature generally increases the reaction rate?
a. increased surface area
b. more frequent and energetic collisions
c. decreased activation energy
d. higher concentration

Explanation:

Increasing temperature gives reactant particles more kinetic energy. This leads to more frequent collisions between particles and also makes the collisions more energetic. When collisions are more frequent and energetic, there is a greater chance of successful collisions that overcome the activation - energy barrier, thus increasing the reaction rate. Surface area is related to the amount of exposed reactant, activation energy is affected by catalysts rather than temperature directly, and concentration is a different factor from temperature.

Answer:

B. More frequent and energetic collisions