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When a crystal of potassium permanganate is placed in a beaker of water, the water turns purple even without stirring. This process is known as:
Evaporation
Diffusion
Osmosis
Condensation
Diffusion
The spreading of potassium permanganate in water is a classic example of diffusion. It is the movement of particles from a region of higher concentration to a region of lower concentration until they are evenly distributed.
The spreading of potassium permanganate in water is a classic example of diffusion. It is the movement of particles from a region of higher concentration to a region of lower concentration until they are evenly distributed.
Think of a drop of ink falling into a glass of water; it slowly spreads out on its own, just like the smell of a perfume sprayed in one corner of a room reaches the other side.
J=тИТDdxdcтАЛ тАФ Fick's first law of diffusion, where J is diffusion flux and D is the diffusion coefficient.
This phenomenon occurs due to the kinetic energy possessed by the particles of matter. As the crystal dissolves, the particles move randomly (Brownian motion) and occupy the empty spaces between the water molecules. Since the particles are in constant motion, they spread throughout the solvent even without external mechanical stirring.
Diffusion is a property of matter that demonstrates that particles are in continuous, random motion.
The rate of diffusion increases with an increase in temperature because kinetic energy of particles increases.
Diffusion occurs in gases and liquids, but it is fastest in gases due to high kinetic energy and larger intermolecular spaces.
Explains how nutrients and oxygen enter cells in biological systems.
Exchange of gases like oxygen and carbon dioxide in the lungs.
Spread of scent from flowers or food items through air.
Option A (Evaporation) is the change of liquid into vapor at a surface. Option C (Osmosis) requires a semi-permeable membrane. Option D (Condensation) is the reverse of evaporation.
B is correct тАФ The process of movement of particles of potassium permanganate from a higher concentration to a lower concentration in water is called diffusion.
Remember that diffusion in solids is extremely slow, whereas in gases it is almost instantaneous; always check the state of matter if asked about the rate of diffusion in an exam.