Which of the following ionic species has highest precipitating power?

Which of the following ionic species has highest precipitating power?
  1. $\mathrm{Cu}^{+2}$
  2. $\mathrm{SO} 4^{-2}$
  3. $\mathrm{Na}^{+}$
  4. $\mathrm{Al}^{+3}$

Solution

Highest valency $=$ Highest precipitating power.

Asked in: MHT CET 2020 (12 Oct Shift 2)

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