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प्रश्न
State the Hardy-Schulze rule.
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उत्तर
The Hardy-Schulze rule states that the greater the valency of the oppositely charged ion of the electrolyte being added, faster is coagulation. The greater the valency of the flocculating ion, the greater its power to coagulate.
संबंधित प्रश्न
Define the following term:
Zeta potential
Out of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.
What modification can you suggest in the Hardy-Schulze law?
Explain what is observed when an electrolyte NaCl is added to hydrated ferric oxide sol.
Which of the following will show Tyndall effect?
What is Gold number?
Tyndall effect is observed in
The right option for the statement “Tyndall effect is exhibited by”, is:
Define the following term:
Coagulation
The conditions given below are in the context of observing Tyndall effect in colloidal solutions:
- The diameter of the colloidal particles is comparable to the wavelength of light used.
- The diameter of the colloidal particles is much smaller than the wavelength of light used.
- The diameter of the colloidal particles is much larger than the wavelength of light used.
- The refractive indices of the dispersed phase and the dispersion medium are comparable.
- The dispersed phase has a very different refractive index from the dispersion medium.
Choose the most appropriate conditions from the options given below:
