Fido 5:37 PM Net lonic Equation: Ag 1Br-1AgBr (a) The wastewater dumped into a r

Question

Fido 5:37 PM Net lonic Equation: Ag 1Br-1AgBr (a) The wastewater dumped into a river from Plant A contains dissolved sodium hydroxide. Plant B's wastewater contains barium chloride in solution. A third plant, Plant C, has some silver sulphate dissolved in the water it discards into the river When these wastewaters eventually mix, various precipitates form. Identify all of the precipitates which form and are deposited as sludge on the river bottom. 3. (b) How could Plant C treat its wastewater to recover a very valuable product? Sodium Hydroxide dissolved Barium Chloride in solution Silver sulphate dissolved

Explanation / Answer

NaOH (aq) + BaCl2 ( (aq) ) ? Ba(OH)2(solid)+ NaOH (aq)

NaOH+ Ag2(SO4) ? Na2SO4(solid)+ Ag(OH)2(solid)

Ag2(SO4) + BaCl2 ? BaSO4(solid)+ AgCl

Precipitate formed are barium hydroxide, silver hydroxide, sodium sulphate and barium sulphate.

2.

Here in the second reaction both are products are solid or they will precipitate out and the remaining water can be easily filtered off.

Sodium hydroxide dissolved

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