Question

value: 5
factors that affect the rate of reaction include ____, __, and ____.
mark all correct answers
a. an increased concentration of reactants
b. an increase in temperature
c. an increase in light
d. an increase in pressure

Explanation:

• For option a: Increasing reactant concentration provides more particles to collide, increasing reaction rate.
• For option b: Higher temperature gives particles more kinetic energy, increasing collision frequency and energy, thus increasing rate.
• For option c: Light can provide energy (e.g., in photochemical reactions) to initiate or speed up reactions.
• For option d: Increasing pressure (for gaseous reactions) increases concentration of reactants, leading to more collisions and higher rate.

Answer:

a. an increased concentration of reactants, b. An increase in temperature, c. an increase in light, d. an increase in pressure