Identify the correct decreasing order of precipitation power of flocculating ion added, from following.

Identify the correct decreasing order of precipitation power of flocculating ion added, from following.
  1. $\mathrm{Al}^{3+}>\mathrm{Na}^{+} \mathrm{Ba}^{2+}$
  2. $\mathrm{Ba}^{2+}>\mathrm{Al}^{3+}>\mathrm{Na}^{+}$
  3. $\mathrm{Al}^{3+}>\mathrm{Ba}^{2+}>\mathrm{Na}^{+}$
  4. $\mathrm{Na}^{+}>\mathrm{Ba}^{2+}>\mathrm{Al}^{3+}$

Solution

Higher is the valency of ion or charge of ion more will be its precipitation power. $\mathrm{Al}^{3+}>\mathrm{Ba}^{2+}>\mathrm{Na}^{+}$

Asked in: MHT CET 2021 (22 Sep Shift 2)

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