In the selective precipitation of metal ions as sulphide salts, usable concentrations of the S²^- ions can be maintained by bubbling H₂S through a solution buffered at a pH of about 10.0. How many mL of 6 M HCl would need to be added to 3.5 mL of a solution 5.6 M in aqueous ammonia to form a solution buffered at pH 10.0?

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The Answer of In the selective precipitation of metal ions as sulphide salts, usable concentrations of the S²^- ions can be maintained by bubbling H₂S through a solution buffered at a pH of about 10.0. How many mL of 6 M HCl would need to be added to 3.5 mL of a solution 5.6 M in aqueous ammonia to form a solution buffered at pH 10.0?

In the Selective Precipitation of Metal Ions as Sulphide Salts