A groundwater sample has a pH of 7.5 and a total carbonate concentration of 7.0 mol/L. What is the concentration (in g/L) of bicarbonate (the partially dissociated form) in the sample?
A groundwater sample has a pH of 7.5 and a total carbonate concentration of 7.0 mol/L....
A groundwater sample obtained near a septic tank has a pH of 6.90 and HCO3- concentration of 8.25 mmol L-1. The source of bicarbonate is from the carbon dioxide produced from microbes and the process can be presented as the following chemical equation. CO2 (g) + 2H2O (l) ⇌ HCO3- (aq) + H3O+ (aq) Ka = 4.5x10-7 Provided with a Henry’s constant of CO2 as 0.034 M/atm, answer the following questions. Use an ICE table and work backward to determine...
A water sample contains a 4:1 molar ratio of bicarbonate to carbonate at a pH of 8.5. The alkalinity of the sample is 75 mg/L as CaCO3. Determine the mg/L values of bicarbonate and carbonate in the solution.
* An analysis of a sample of water with PH-7.5 has produced t following concentrations (mg/l). (Answer the following two questions) Cations Anions 102 Cl HCO3150 SO4 Na 50 4 260 Ca 46 Mg 26 4. The total dissolved solids in mg/l a) 588 b) 540 38 d) 238 e)None 5. The Non-carbonate hardness in mg/l as CaCO is: a) 98.75 c) 122.95 d) Zero e)None
Please need ASAP Problem 1 (25 pts) The influent water to a water treatment plant that treats 50x10° L/day has a pH of 7.5 and the following composition: eqmolW (g/mol) [1 | (me/L) | [1 (mg/L as CaCO) L) mg/L) | H2COs 100 2 62.0 3.2 161.3 Ca2 100 2 40.0 5.0 250.0 Mg2 40 2 24.4 3.3 163.9 Nat 43.5 20 0.9 23.0 300.0 300 100.0 6.0 ALK 114.6 2.3 96.0 110 SO1 a) Write the chemical reactions controlling...
a water concentration of calcium carbonate of 5.34x10^-3 mol/L. convert the concentration into mg/L
A sample of water has the following concentrations of ions (and pH = 7.0): cations mg/L anions mg/L Ca+2 40.0 HCO3- 110.0 Mg+2 10.0 SO42- 67.2 Na+ ? Cl- 11.0 K+ 7.0 Assuming no other constituents are missing, use an anion-cation balance to estimate the concentration of Na+ (in mg/L as Na+)? Remember that the balance cannot be in mg/L.
test for common ions are run on a sample of water Fall Semester, 2018 Tutorial 4 Tests for common ions are run on a sample of water and the results are shown below HCO, 165mg/L so'. 173 mg/L cr = 202 mg/L Draw a milliequivalent-per-iter bar diagram and determine the error in the ion balance. L. Na+ Mg> Ca2+ 124 mg/L 28 mg/L 70 mg/L = = 2. A laboratory measures the following concentrations of ions in a sample of...
The K+ concentration in an adult blood sample is 4.8*10-3 mol/L. What is the total amount of K+ in mEq in this adult? Assume that this adult has a total of 4.7 L of blood.
The following analysis has been reported for a sample of contaminated groundwater obtained near an aluminum production facility: pH = 11.2 Cl- = 1,100 mg/L Na+ = 6,500 mg/L F- = 4,350 mg/L K+ = 2,230 mg/L DIC = 1,740 mg/L (as C) Ca2+ = 3,400 mg/L SO42- = 3;940 mg/L Mg2+ = 1,350 mg/L OH- = 10-2.8 mol/L (a) Check the charge balance for this analysis. Does the total cationic charge (in equiv/L) equal the total anionic charge to...
4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and pKa- 7.54. Note that the dissociation of hypochlorous acid proceeds as follows: 4. If 15 mg/L of HOCl is added to a potable water for disinfection and the final measured pH is 7.0, what percentage of the HOCl is dissociated? Assume the temperature is 25°C and...