Project:Deactivating a ferric chloride solution: Difference between revisions
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Revision as of 19:32, 7 June 2010
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The mass of 1 mole is obtained by adding together the atomic masses obtained from the periodic table of elements: | The mass of 1 mole is obtained by adding together the atomic masses obtained from the periodic table of elements: | ||
Iron (Fe) has the atomic mass of 55.8 (grams/mole) and Chlorine (Cl) has the atomic mass of 35,5 (grams/mole). | |||
Ferric chloride (FeCl<sub>3</sub>) will then have the molecular mass of 55.8 * 1 + 35.5 * 3 = 162.3 g/mole. | Ferric chloride (FeCl<sub>3</sub>) will then have the molecular mass of 55.8 * 1 + 35.5 * 3 = 162.3 g/mole. | ||
To find how many moles are contained in 300 grams of ferric chloride the calculation is 300/162.3 = 1.85 moles of ferric chloride. | To find how many moles are contained in 300 grams of ferric chloride the calculation is 300/162.3 = 1.85 moles of ferric chloride. | ||
Conversely; Sodium (Na) ~ 23 g/mole, Oxygen (0) ~ 16 g/mole and Hydrogen (H) 1 g/mole totalling 40 grams per mole. | |||
Each mole of FeCl<sub>3</sub> requires 3 moles of NaOH (sodium hydroxide) at 40 grams per mole. | Each mole of FeCl<sub>3</sub> requires 3 moles of NaOH (sodium hydroxide) at 40 grams per mole. | ||
