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The nature of charge on resulting colloidal particles when FeCl3 is added to excess of hot water is:

1. Positive
2. Sometimes positive and sometimes negative
3. Neutral
4. Negative

Correct answer: Positive

Solution

When FeCl3 is dissolved in hot water, it dissociates and the iron ions (Fe3+) can hydrolyze to form positively charged colloidal particles. This results in a net positive charge on the colloidal particles.

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