User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/10/05

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20 ppm SO<sub>4</sub><sup>2-</sup> = 20 mg/L SO<sub>4</sub> · 0.5 L = 10 mg SO<sub>4</sub><sup>2-</sup> · .1 g /1000 mg = 0.01 g SO<sub>4</sub><sup>2-</sup>
20 ppm SO<sub>4</sub><sup>2-</sup> = 20 mg/L SO<sub>4</sub> · 0.5 L = 10 mg SO<sub>4</sub><sup>2-</sup> · .1 g /1000 mg = 0.01 g SO<sub>4</sub><sup>2-</sup>
-
0.01 g SO<sub>4</sub><sup>2-</sup> ÷ 96.06 g/mole = 1.041 × 10<sup>-4</sup> moles SO<sub>4</sub><sup>2-</sup> · 1 mole CuSO<sub>4</sub>·5H<sub>2</sub>O / 1 mole SO<sub>4</sub><sup>2-</sup>
+
0.01 g SO<sub>4</sub><sup>2-</sup> ÷ 96.06 g/mole = 1.041 × 10<sup>-4</sup> moles SO<sub>4</sub><sup>2-</sup> · 1 mole CuSO<sub>4</sub>·5H<sub>2</sub>O / 1 mole SO<sub>4</sub><sup>2-</sup> = 1.041 × 10<sup>-4</sup> moles CuSO<sub>4</sub>·5H<sub>2</sub>O
 +
 
 +
1.041 × 10<sup>-4</sup> moles CuSO<sub>4</sub>·5H<sub>2</sub>O · 249.68 g/mole CuSO<sub>4</sub>·5H<sub>2</sub>O = 0.0260 g CuSO<sub>4</sub>·5H<sub>2</sub>O
 +
 
 +
1.041 × 10<sup>-4</sup> moles CuSO<sub>4</sub>·5H<sub>2</sub>O · 1 mole Cu<sup>2+</sup> / 1 mole CuSO<sub>4</sub> = 1.041 × 10<sup>-4</sup> moles Cu<sup>2+</sup>
 +
 

Revision as of 12:19, 8 October 2012

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Objective

To remake the CuSO4·5H2O and Ha2SO4 standards

Description

  • See below for calculations


Data

No data was collected today.

Calculations

20 ppm SO42- = 20 mg/L SO4 · 0.5 L = 10 mg SO42- · .1 g /1000 mg = 0.01 g SO42-

0.01 g SO42- ÷ 96.06 g/mole = 1.041 × 10-4 moles SO42- · 1 mole CuSO4·5H2O / 1 mole SO42- = 1.041 × 10-4 moles CuSO4·5H2O

1.041 × 10-4 moles CuSO4·5H2O · 249.68 g/mole CuSO4·5H2O = 0.0260 g CuSO4·5H2O

1.041 × 10-4 moles CuSO4·5H2O · 1 mole Cu2+ / 1 mole CuSO4 = 1.041 × 10-4 moles Cu2+



Notes

This area is for any observations or conclusions that you would like to note.


Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.



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