Question
What causes brownian motion in colloidal dispersion?

Answer

Unbalanced bombardment of the particles of dispersed phase by molecules of dispersion medium causes brownian motion. This stabilises the sol.

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Similar questions

In a pseudo first order hydrolysis of ester in water, the following results were obtained:
t/s $0$ $30$ $60$ $90$
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  1. Calculate the average rate of reaction between the time interval $30$ to $60$ seconds.
  2. Calculate the pseudo first order rate constant for the hydrolysis of ester.
Explain the mechanism of the following reaction: $\text{CH}_{3}-\text{CH}_{2}-\text{OH}\xrightarrow[443 K]{H^+}\text{CH}_{2}=\text{CH}_{2}+\text{H}_{2}\text{O}$
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$2\text{H}_2\text{O}_2\frac{\text{I}^-}{\text{alkaline medium}}2\text{H}_2\text{O}+\text{O}_2$
the proposed mechanism is as given below:
  1. $\text{H}_2\text{O}_2+\text{I}^{-}\xrightarrow{\ \ \ \ \ \ \ }\text{H}_2\text{O}+\text{IO}^{-}(\text{slow})$
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