CBSE Class 12-science Answered
Explain the following Observation
Fe(OH)3 SOL COAGULATES ON ADDITION OF A SOLUTION OF K2 SO4
Asked by vaibhav gupta | 30 Jun, 2013, 03:15: PM
Expert Answer
When an electrolyte is added to the sol, the colloidal particles take up ions carrying opposite charges from the electrolyte. As a result, their charge gets neutralised and this causes the uncharged particles to come closer and to get coagulated. Here Fe3+ ions of ferric hydroxide are attracted by the negatively charged SO42- sol particles and their charge gets neutralised. This leads to coagulation.
Answered by | 01 Jul, 2013, 10:20: AM
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