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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry3 Marks
Question
Write one difference in each of the following:
  1. Write the dispersed phase and dispersion medium of milk.
  2. Write one similarity between physisorption and chemisorption.
  3. Write the chemical method by which $Fe(OH)_3$ sol is prepared from $FeCl_3.$
✓

Answer

  1. Dispersed phase-liquid, Dispersion medium – liquid.
  2. Both are surface phenomenon/both increase with increase in surface area.
  3. $\text{Hydrolysis}/\text{FeCl}_3+3\text{H}_2\text{O} \xrightarrow{\text{ }\text{ }\text{ }\text{hydrolysis }\text{ }\text{ }\text{ }}\text{ }\text{Fe(OH)}_3\text{(sol)+3HCl}$

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