Question

Which of the electrolyte will be most effective in congulation of as2s3 and why? Alcl3 bacl2 nacl?

Answer 1

Answer:

As2S3 is a negatively charged sol, the negative charge is due to adsorption of S2- ions on the sol.

For coagulation wen nedd oppositely charged sol i.e. positively charged sol.

Also, accoding to Hardy-Schulz law which states : ‘the greater the valence of the flocculating ion, the greater will be its coagulating power’

Thus the most effective flocculant will be AlCl3 as Al has +3 charge on it.

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