The formation of silver hydroxide, AgOH (s), is a precipitation reaction used to remove silver from...

The formation of silver hydroxide, AgOH (s), is a precipitation reaction used to remove silver from water originated from industries of photographic material processing. Similar reactions are used to remove other heavy metals in water. The pKs of the relevant reaction shown below is 7.7 at 25 °C.

AgOH (s) ↔ Ag⁺ + OH^-

If the pH of a specific wastewater is initially 6.5 and after treatment is 10.0, what is the maximum concentration of soluble Ag⁺ in mg/L a) prior and b) after treatment? c) Is pH 13 enough to reduce silver concentrations to Secondary MCL (maximum contaminant level) of 0.1 mg/L?

Data:

1) Atomic weight: Ag=107.87 g/mole; O=16.00 g/mole; H=1.01 g/mole;

2) Assume that any other compounds or metals in this wastewater do not influence this solubility reaction.

3) The temperature of the wastewater is 25 ºC.

Expert Solution

N.B.- If you have any further queries, please feel free to ask in the comments section.

Amanda K answered 57 minutes ago

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