Chemistry · Chemical principles involved in experiments: Enthalpy of solution of CuSO4, Enthalpy of neutralization of strong acid and strong base, Preparation of lyophilic and lyophobic sols, Kinetic study of the reaction of iodide ions with hydrogen peroxide at room temperature
On adding few drops of dilute or to freshly precipitated ferric hydroxide, a red
On adding few drops of dilute \( H C l \) or \( \boldsymbol{F} \boldsymbol{e} \boldsymbol{C l}_{3} \) to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. This phenomenon is known as:
- A. peptization
- B. dialysiss
- C. protection
- D. dissolution
Step-by-step solution
The conversion of a freshly precipitated substance into a colloidal sol by adding a suitable electrolyte is called peptization. Here, adding dilute HCl or FeCl3 to ferric hydroxide precipitate results in a red colloidal solution, exemplifying peptization.
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