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Chemistry, 18.12.2019 00:31 josephinekiim
Adrinking water at ph 7.2 contains 8 x 10^-4 m tot ca and has an alkalinity of 80 mg/l as caco3, provided entirely by species of the carbonate group. it is desired to adjust the ph of this water to cause calcite to be slightly supersaturated for the purposes of corrosion control. how much lime must be added to achieve a saturation index of 0.2? what would the ph of the water be?
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Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
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Adrinking water at ph 7.2 contains 8 x 10^-4 m tot ca and has an alkalinity of 80 mg/l as caco3, pro...
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