Which applies to the collision theory?

a. particles need to collide in order to react.

b. particles may obtain successful collisions in any molecular orientation.

c. temperature increase causes kinetic energy of particles to decrease.

d. reactions do not have to begin with collision of molecules or particles.

Answer : Option A) Particles need to collide in order to react.

Explanation : According to the collision theory, for a reaction to occur, there must be a collision taking place between the two reactant particles in the system. This confirms the option A as the correct answer.

A.Particles need to collide in order to react.

Explanation:

Particles need to collide in order to react applies to the collision theory.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.