Question

The nature of charge on resulting colloidal particles when $FeC{l}_3$ is added to excess of hot water is:

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• A. Sometimes positive and sometimes negative
• B. Negative
• C. Positive
• D. Neutral

Answer 1

The correct option is C Positive

If $FeC{l}_3$ is added to excess hot water, a positively charged sol, hydrated ferric oxide is formed due to adsorption of $F{e}^{3+}$ ions. Hence, the resulting charge on colloidal particle is positive.