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The particles of a particular colloidal ...

The particles of a particular colloidal solution of arsenic trisulphide `(As_(2)S_(3))` are negatively charged. Which 0.0005 M solution would be most effective in coagulating this colloidal solution. `KCl, MgCl_(2), AlCl_(3)` or `Na_(3)PO_(4)` ? Explain.

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To determine which 0.0005 M solution would be most effective in coagulating a negatively charged colloidal solution of arsenic trisulphide (As₂S₃), we can follow these steps: ### Step 1: Understand the nature of the colloidal solution Arsenic trisulphide (As₂S₃) is a negatively charged colloidal solution. This means that the particles in the colloid carry a negative charge. ### Step 2: Identify the coagulating agents We are given four potential coagulating agents: KCl, MgCl₂, AlCl₃, and Na₃PO₄. Coagulation occurs when oppositely charged ions neutralize the charge of the colloidal particles. ...
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