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

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 Revision as of 13:15, 8 October 2012 (view source)← Previous diff Revision as of 13:19, 8 October 2012 (view source)Next diff → Line 28: Line 28: 20 ppm SO42- = 20 mg/L SO4 · 0.5 L = 10 mg SO42- · .1 g /1000 mg = 0.01 g SO42- 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- + 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+ +

## Revision as of 13:19, 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

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