Answered: The pH of the water is measured as 8.5…

The pH of the water is measured as 8.5 and the total concentrations of carbonate species is found to be 0.00180M. Find the concentrations of H₂CO3, HCO3 and CO2 by using equations.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 42QRT

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Question

Subject environmental engineering solve question 11

b. Find the DUB
10. A water treatment plant treats the water at the rate of 33 MGD. Average initial suspended
solids concentration is 21 mg/L. Coagulation reduces 95% of the suspended solids
concentration. (Average alum dosage = 18 mg/L). Determine the total dry weight of sludge
produced in Ibs/day.
Al2(SO4)3 14H₂O + 6 HCO3
2Al(OH)3(s) + 6CO2 +14H₂O +3S0²
11. The pH of the water is measured as 8.5 and the total concentrations of carbonate species is
found to be 0.00180M. Find the concentrations of H₂CO3, HCO3 and CO² by using
equations.
12. What is the pH of the solution containing 2.5 X 10 of OH- at 25°C?
13. The dissolved oxygen concentration in the fresh water sample was found to be 8.05 mg L
The solubility of oxygen in the sample was measured at 0.83 atm and 22 °C. Compare your
values from the table and report the percentage error. Note: Sample does not contain any salt

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