Which of the following is a correct statement about collision theory? A. All collisions lead to chemical reactions. B. Most collisions lead to chemical reactions. C. Very few reactions involve particle collisions. D. Effective collisions lead to chemical reactions. E. Reactions do not require particles to collide.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.