Short Answer
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?
Correct Answer:

Verified
Correct Answer:
Verified
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