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Zorluk: KolayRate of Reaction and Collision Theory

According to collision theory, which of the following conditions must be satisfied for a collision between reacting particles to result in a chemical reaction?

  1. The colliding particles must possess kinetic energy equal to or greater than the activation energy and have proper spatial orientation.Cevap
  2. B
    A catalyst must be present to shift the position of equilibrium towards product formation.
  3. C
    The overall enthalpy change (ΔH\Delta H) of the reaction must be negative regardless of activation energy.
  4. D
    The concentration of reactants must be decreased to reduce acid strength and pH.

Cevap

The colliding particles must possess kinetic energy equal to or greater than the activation energy and have proper spatial orientation.
Collision theory establishes that a reaction occurs only when colliding particles possess energy at least equal to the activation energy (EaE_a) and are oriented properly during impact.

Adım Adım Çözüm

1
Identify the basic postulates of Collision Theory.
Not all collisions lead to a chemical reaction; only 'effective' collisions produce products.
Collision theory requires reacting species to meet specific energy and alignment criteria.
2
Analyze the energy requirement.
Colliding molecules must have kinetic energy E≥EaE \ge E_a (activation energy).
Energy is required to overcome repulsive forces and break existing chemical bonds.
3
Analyze the orientation requirement.
Particles must collide with proper spatial alignment.
Correct alignment ensures reactive sites interact to form the activated complex.

Anahtar Kavram

Conditions for Effective Collisions
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Rate of Reaction and Collision Theory