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The cause of Brownian movement is
- a)impact of molecules of dispersion medium on colloidal particles
- b)attractive forces between the particles of dispersed phase and dispersing medium
- c)heat changes in liquid state
- d)convection current
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The cause of Brownian movement isa)impact of molecules of dispersion m...
Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles. Since the impacts of the molecules of the dispersion medium on the colloidal particles are unequal (i.e. unbalanced bombardment), the result is zig-zag motion.
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Most Upvoted Answer
The cause of Brownian movement isa)impact of molecules of dispersion m...
Explanation:
Impact of molecules of dispersion medium on colloidal particles:
- The cause of Brownian movement is the impact of molecules of the dispersion medium on colloidal particles.
- These collisions between the particles of the dispersion medium and the dispersed phase result in the erratic movement of colloidal particles.
- The constant collisions from the molecules of the dispersion medium lead to the Brownian motion, which is a random motion of particles in a fluid medium.
Attractive forces between the particles of dispersed phase and dispersing medium:
- While attractive forces exist between the particles of the dispersed phase and the dispersing medium, they do not directly cause Brownian movement.
- Brownian movement is primarily driven by the continuous bombardment of the dispersion medium's molecules on the colloidal particles.
Heat changes in liquid state:
- Heat changes in the liquid state can influence the movement of particles but do not directly cause Brownian motion.
- The random kinetic energy due to heat can contribute to the speed and intensity of Brownian movement.
Convection current:
- Convection currents are movements of fluids due to temperature differences and are not directly related to Brownian motion.
- While convection currents can exist in a liquid medium, they do not play a significant role in the Brownian movement of colloidal particles.
In conclusion, the primary cause of Brownian movement is the impact of molecules of the dispersion medium on colloidal particles, leading to their erratic motion. Other factors like attractive forces and heat changes can influence the movement but are not the main driving force behind Brownian motion.
Impact of molecules of dispersion medium on colloidal particles:
- The cause of Brownian movement is the impact of molecules of the dispersion medium on colloidal particles.
- These collisions between the particles of the dispersion medium and the dispersed phase result in the erratic movement of colloidal particles.
- The constant collisions from the molecules of the dispersion medium lead to the Brownian motion, which is a random motion of particles in a fluid medium.
Attractive forces between the particles of dispersed phase and dispersing medium:
- While attractive forces exist between the particles of the dispersed phase and the dispersing medium, they do not directly cause Brownian movement.
- Brownian movement is primarily driven by the continuous bombardment of the dispersion medium's molecules on the colloidal particles.
Heat changes in liquid state:
- Heat changes in the liquid state can influence the movement of particles but do not directly cause Brownian motion.
- The random kinetic energy due to heat can contribute to the speed and intensity of Brownian movement.
Convection current:
- Convection currents are movements of fluids due to temperature differences and are not directly related to Brownian motion.
- While convection currents can exist in a liquid medium, they do not play a significant role in the Brownian movement of colloidal particles.
In conclusion, the primary cause of Brownian movement is the impact of molecules of the dispersion medium on colloidal particles, leading to their erratic motion. Other factors like attractive forces and heat changes can influence the movement but are not the main driving force behind Brownian motion.
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The cause of Brownian movement isa)impact of molecules of dispersion medium on colloidal particlesb)attractive forces between the particles of dispersed phase and dispersing mediumc)heat changes in liquid stated)convection currentCorrect answer is option 'B'. Can you explain this answer?
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