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The stability of colloidal particles is due to this feature

Question

The stability of colloidal particles is due to this feature

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Solution

The stability of colloidal particles is primarily due to the electric charge on the particles.

Here's a step-by-step explanation:

  1. Colloidal particles carry an electric charge, which can be either positive or negative. This charge is usually due to ion adsorption.

  2. When two particles come close to each other, their similar electric charges cause them to repel each other due to the electrostatic force. This is known as electrostatic stabilization.

  3. This repulsion prevents the particles from coming too close and aggregating (clumping together), which helps to maintain the dispersion of particles and thus the stability of the colloid.

  4. In addition to electrostatic stabilization, there is also steric stabilization. This is when a layer of absorbed ions or molecules (from the dispersing medium) surrounds the colloidal particles, preventing them from aggregating.

  5. Therefore, the stability of colloidal particles is due to the electric charge on the particles and the repulsion forces it creates, as well as steric effects.

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Similar Questions

Colloids, also known as colloidal solutions or colloidal systems, are mixtures in which microscopically dispersed insoluble particles of one substance are suspended in another substance. The size of the suspended particles in a colloid can range from 1 to 1000 nanometres (10-9 metres). For a mixture to be classified as a colloid, its suspended particles must not settle (in the manner that the particles of suspensions settle at the bottom of the container if left undisturbed). Colloidal solutions are known to exhibit the Tyndall Effect, which is a phenomenon in which beams of light incident on colloids are scattered due to the interactions between the light and the colloidal particles.

Explain why particles of a colloidal solution do not settle down when leftundisturbed, while in the case of a suspension they do.

The particles in solutions are smaller than the particles in suspensions or colloids.TrueFalse

WHAT IS A COLLOIDAL SOLUTION?

State two differences between solutions and colloids.

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