The experimentally measured flocculation values for a specific negative sol using and are and respec — Surface Chemistry Chemistry Question
Question
The experimentally measured flocculation values for a specific negative sol using $NaCl$ and $AlCl_3$ are $52$ and $0.093$ respectively. Approximately how many times greater is the coagulating power of $AlCl_3$ compared strictly to $NaCl$?
Answer: C
💡 Solution & Explanation
Coagulating power is strictly inversely proportional to the flocculation value. Therefore, the ratio of the coagulating power of $Al^{3+}$ to $Na^+$ is simply the inverse ratio of their values: $52 / 0.093 \approx 559.1$. Rounding yields 560 times.
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