the lab is already done, just have to complete the form. No plagiarism and the work should not be posted online.

the lab is already done, just have to complete the form. No plagiarism and the work should not be posted online.


Name Group Results: · Total Dissolved Solids in Water Samples (15 pts) Sample # Brand of Sample Relative amount of Solids/Comments 1 Distilled Water 2 3 Preparation of EDTA solution (10 pts) Grams of EDTA required Mass of EDTA (Analytical Balance) Mass of 250 mL flask (Top Loading Balance) Tare mass Gross mass Net mass moles of EDTA mass of water Concentration of EDTA (use correct units and number of significant figures!) (15 Pts) Molarity (M) Insert your group’s data sheet here. (10 pts) · Quantitative Determination of Calcium Ion in Water Samples by EDTA Titration (30 pts) Dist. Water Sample 1 Sample 2 Trial number 1 2 3 4 5 Brand Name N/A Sample Volume (25.00 or 10.00 mL) Initial Volume (Vo) Final Volume (Vf) Net Volume mol EDTA molarity Ca2+ Water Hardness Questions (total of 20 pts) · Do the qualitative and quantitative results correlate? Explain your answer. (10 pts) · Why is hard water undesirable for some household and industrial uses? Explain the problem(s) encountered with using very hard water in these applications using chemical equations. This may require a little research. (10 pts) Sample # | Brand of Sample Relative amount of Solids/Comments 1 | Distiled Water No residue Left ) NO chonge cfter t |Rlyine White vesidue Left in the shape ofa dplot 3 | Pguadna NO residue LfE , No change sbler] Grams of EDTA required _o-dbig ‘Mass of EDTA Mass of 250 mL flask (Analytical Balance) (Top Loading Balance) Gabaacy 014639 AMS: 134 9 A Dist. Water Sample 1 eh ca Sample 2 [a Ca) Brand Name Na |BlsereS Folloginm Aguafina sample votume | 5 oo | some 25 ceml | 95.00mL nia Volume (V9) | 0. Gone omvome 2:00 vl | 13.20ac Fiaal Vome (V) | gm | 383ml |R:55me | 13@ 30rd] 3g.62me