According to collision theory, which factors determine whether a collision between two reactant molecules will result in a chemical reaction?

• A. The molecules must collide with sufficient energy and proper orientation.
• B. The molecules must be in the gaseous state and have similar masses.
• C. The molecules must have identical electronegativities.
• D. The molecules must collide at low temperatures and high pressures.

Answer: (A)

Verified step by step guidance

1. Understand that collision theory explains how chemical reactions occur based on collisions between reactant molecules.
2. Identify the two main factors from collision theory that determine if a collision leads to a reaction: sufficient energy and proper orientation.
3. Recognize that 'sufficient energy' means the molecules must have enough kinetic energy to overcome the activation energy barrier of the reaction.
4. Understand that 'proper orientation' means the molecules must be aligned in a way that allows the necessary bonds to break and form during the collision.
5. Note that other factors like physical state, mass similarity, electronegativity, temperature, and pressure can influence reaction rates but are not the primary determinants according to collision theory.