Increased temperature causes the reaction rate to

• A. Decrease
• B. No change
• C. Increase
• D. Stop

Answer: (C)

Raising temperature increases the reaction rate because particles move faster and collide more often and with more energy. When temperature goes up, a larger fraction of collisions have enough energy to overcome the activation energy barrier, so a greater portion of collisions lead to product. The result is a higher rate constant and a faster overall reaction. This means the reaction won’t slow down, stay the same, or stop simply due to temperature increase (though extreme temperatures can cause other issues).