User:Karlena L. Brown/Notebook/PVOH Research/2012/09/28: Difference between revisions
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'''Actual concentration of Na<sup>+</sup> in 2020 ppm SO<sub>4</sub><sup>-2</sup> solution:''' | '''Actual concentration of Na<sup>+</sup> in 2020 ppm SO<sub>4</sub><sup>-2</sup> solution:''' | ||
'''(4.856 × 10<sup>-4</sup> g Na<sup>+</sup>)/0.5 L × 10<sup>6</sup> = 971 ppm''' | '''(4.856 × 10<sup>-4</sup> g Na<sup>+</sup>)/0.5 L × 10<sup>6</sup> = 971 ppm''' | ||
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'''MW CuSO<sub>4</sub>·5H<sub>2</sub>O: 249.69 g/mol''' | '''MW CuSO<sub>4</sub>·5H<sub>2</sub>O: 249.69 g/mol''' |
Revision as of 22:26, 15 October 2012
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OBJECTIVES
X-Ray Diffraction InstructionsNa+ and Cu2+ Ion Calculations in 2000ppm SO42- Solutions
MW Na2SO4: 142.04 g/mol MW Na+: 22.99 g/mol Mass Na+: 0.00150 g Na2SO4 × (1 mol Na2SO4/142.04 g Na2SO4) × (2 mol Na+/1 mol Na2SO4) × (22.99 g Na+/1 mol Na+) = 4.856 × 10-4 g Na+ Actual concentration of Na+ in 2020 ppm SO4-2 solution: (4.856 × 10-4 g Na+)/0.5 L × 106 = 971 ppm
MW CuSO4·5H2O: 249.69 g/mol MW Cu+2: 63.55 g/mol 0.00252 g CuSO4·5H2O × (1 mol CuSO4·5H2O/249.68 g CuSO4·5H2O) × (1 mol Cu+2/1 mol CuSO4·5H2O) × (63.55 g Cu+2/1 mol CuSO4·5H2O) = 6.41 × 10-4 g Cu+2 Actual concentration of Cu+2 in 2020 ppm SO4-2 solution: (6.41 × 10-4 g Cu+2)/0.5 L × 106 = 1283 ppm Cu+2 (1283 ppm)(5.16 mL) = (M2)(0.5 L) M2 = 13.2 ppm Cu+2 Na+ and Cu2+ Ion Calculations in 20ppm SO42- SolutionsNotes:
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