Consider the table of water quality data for a stream sample…
Consider the table of water quality data for a stream sample (below). One important cation is missing from this table. Assume that no ion pairs or solid precipitates are present in the sample. Fill in the four boxes labeled A, B, C and D For A, format answer as: A, or A^#- / A^#+ if there is a charge For B-E, type the numerical value If needed, use E’s to designate scientific notation to make numbers fit in the blanks (ex: 0.1 = 1.00E-01; 10 = 1.00E+01). Concentration (mg/L) Concentration (mmoles/L) Charge Concentration (meq/L) Total alkalinity (titratable, as mg/L CaCO3) 294 pH 7.4 3.98E-05 3.98E-05 A B C D Mg2+ 30 1.234 2.469 Na+ 14 0.609 0.609 K+ 3 0.077 0.077 Total cation charges E pOH 6.6 2.51E-04 2.51E-04 Total orthophosphate P 0.05 2.30E-03 nitrate N 1.0 0.071 0.071 sulfate 86 0.895 1.791 chloride 40 1.130 1.130 DOC (mg of C/L) 2 0.2 HCO3- 357 5.85 5.85 Total anion charges 8.87 Charge balance 0.00% Calculated ionic strength* 0.014 *Needed for upcoming questions _______ B: _______ C: _______ D: _______ E: _______
Read DetailsA {L} L sample of stream water requires {mL} mL of {M} M HCl…
A {L} L sample of stream water requires {mL} mL of {M} M HCl to titrate to pH 4.5. What is its alkalinity, reported in meq/L? Provide 3 significant figures in your answer. Attachments are enabled so you can show work here or in the “show work” question towards the bottom of the exam.
Read Details(Use the information in the previous question to answer this…
(Use the information in the previous question to answer this one) c) If [Cutotal] = {T} M and pH = {pH}, what is the concentration of free Cu2+ in the water sample? Format answer in scientific notation and round to 3 significant figures.
Read Details