Addition of ammonium chloride to a solution containing ferric and magnesium ions is essential for selective precipitation of ferric hydroxide by aqueous ammonia.
Amanat , 10 Years ago
Grade 12th pass
1 Answers
Kevin Nash
Last Activity: 10 Years ago
True : Function of ammonium chloride is to suppress
the ionization of NH base 4OH and thus check the precipitation of Mg(OH) base 2
becausethe solubility product of Mg(OH)
base 2 is high.
This is used in salt analysis when 3rd
group radicals are precipitated. The group reagent are NH base 4OH in presence
of NH base 4CI.
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