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Surface Chemistry
Question
Why is it essential to wash the precipitate with water before estimating it quantitatively?
Solution
Answer:
When a colloidal solution is prepared, quite often it contains certain impurities of electrolytes which are crystalloidal in nature and tend to destabilize the solution. Hence it is essential to wash the precipitate with water before estimating it quantitatively to remove impurities of electrolytes.
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Some More Questions From Surface Chemistry Chapter
What is adsorption?
What do you mean by adsorbent and adsorbate?
What is desorption?
Define physical and chemical adsorption.
Is adsorption exothermic or endothermic?
What is an adsorption isotherm and isobar?
What are the physical states of dispersed phase and dispersion medium of froth?
Name a few common adsorbents.
What property must a good adsorbent have?
Why colloids are regarded as very good adsorbents?
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