Multiple Choice
Which of the following factors results in an increase in the rate of diffusion?
15. Chemical Kinetics
Factors Influencing Rates
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Which of the following factors would increase the rate of diffusion?
A
Lower concentration gradient
B
Larger particle size
C
Higher pressure
D
Higher temperature
Verified step by step guidance1
Understand the concept of diffusion: Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. The rate of diffusion is influenced by several factors including temperature, concentration gradient, particle size, and pressure.
Consider the effect of temperature: Higher temperature increases the kinetic energy of particles, causing them to move faster. This increased movement results in a higher rate of diffusion.
Analyze the effect of concentration gradient: A higher concentration gradient (difference in concentration between two areas) typically increases the rate of diffusion, as particles move more rapidly from high to low concentration areas.
Evaluate the impact of particle size: Larger particles tend to move more slowly than smaller particles, which can decrease the rate of diffusion. Therefore, smaller particle size would increase the rate of diffusion.
Examine the role of pressure: Higher pressure can increase the rate of diffusion by forcing particles closer together, which can enhance their movement across a concentration gradient.
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