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7
CH1012
FORMATION
Most
colloid particles have charged external surfaces. The particles
are solvated (around 1 monolayer)
but the residual
charge is sufficient for
interparticle repulsion.
charge is sufficient for
interparticle repulsion.
Destruction
(sedimentation)
An electrolyte introduces
ions that neutralize the
surface charge. ¯
ions that neutralize the
surface charge. ¯
Heating - more severe
collisions occur. ¯
collisions occur. ¯
Why colloids form
