137. Which of the potential jumps in a micelle is called a zeta potential? What is electrophoresis? How does the electrophoresis rate depend on the ζ potential? Calculate the ζ potential using the data below.

Problem No. Particle velocity cm/s External field gradient V/cm (N) Dielectric constant Viscosity (poise)
137 1.8*10-2 5 25.5 0.012

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