Fick's Law and Diffusion
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Questions and Answers

What is the effect of a smaller particle size on the rate of diffusion?

  • It has no effect on the rate of diffusion
  • It requires more energy
  • It moves faster than a larger particle (correct)
  • It moves slower than a larger particle

What is the effect of increasing the temperature on the rate of diffusion?

  • It increases the rate of diffusion (correct)
  • It is proportional to the size of the particle
  • It decreases the rate of diffusion
  • It has no effect on the rate of diffusion

What is the driving force behind Fick's Law?

  • Size of the particles
  • Concentration gradient (correct)
  • Surface area of the membrane
  • Temperature of the system

How does an increase in surface area affect the rate of diffusion?

<p>It increases the rate of diffusion (D)</p> Signup and view all the answers

What is the effect of a longer diffusion distance on the rate of diffusion?

<p>It decreases the rate of diffusion (A)</p> Signup and view all the answers

What is the effect of a steeper concentration gradient on the rate of diffusion?

<p>It increases the rate of diffusion (A)</p> Signup and view all the answers

How does an increase in the diffusion coefficient (D) affect the rate of diffusion?

<p>It increases the rate of diffusion (D)</p> Signup and view all the answers

What is the effect of a thinner barrier on the rate of diffusion?

<p>It increases the rate of diffusion (B)</p> Signup and view all the answers

What is the direction of solute molecules diffusion through the semi-permeable membrane?

<p>From high concentration to low concentration (C)</p> Signup and view all the answers

What is the meaning of the lag time in the context of diffusion?

<p>The time required for a solute to establish a uniform concentration gradient within the membrane (B)</p> Signup and view all the answers

What is the relation between the concentration gradient and the flux of the solute?

<p>The concentration gradient is directly proportional to the flux of the solute (B)</p> Signup and view all the answers

How does the surface area of the membrane affect the diffusion of the solute?

<p>It increases the diffusion of the solute (B)</p> Signup and view all the answers

What is the effect of increasing the diffusion distance on the diffusion of the solute?

<p>It decreases the diffusion of the solute (B)</p> Signup and view all the answers

What is the unit of the flux of the solute?

<p>M/L/t (B)</p> Signup and view all the answers

What is the role of the diffusion coefficient in Fick's first law of diffusion?

<p>It is a measure of the ease of diffusion of the solute (B)</p> Signup and view all the answers

Which factor increases the rate of particle diffusion?

<p>Higher surface area (B)</p> Signup and view all the answers

What occurs when the concentration difference (C1 - C2) is larger?

<p>The rate of diffusion increases (A)</p> Signup and view all the answers

How does temperature affect the rate of diffusion?

<p>Higher temperature increases the rate of diffusion (A)</p> Signup and view all the answers

What is the impact of diffusion distance (h) on the diffusion rate?

<p>It decreases the diffusion rate (D)</p> Signup and view all the answers

Which process involves the solvent passing through a semipermeable membrane?

<p>Osmosis (D)</p> Signup and view all the answers

What will happen if a drug container does not prevent the absorption of water vapor?

<p>The shelf life will significantly reduce (D)</p> Signup and view all the answers

What is one of the first steps in drug release?

<p>Diffusion of solvent (C)</p> Signup and view all the answers

Which phenomenon is crucial for the dissolution and release of drugs from dosage forms?

<p>Diffusion (A)</p> Signup and view all the answers

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