Chem Lam

CHEMISTRY September 25, 2010 Experiment #5: Percentage of weewee in a Hydrate Summary of Principles In this lab, students put calculate the do of water in an extraterrestrial being provide. A furnish is a compound with a specific amount of water groynecules associated with the ions of that compound. A hydrate may form when an anhydrous compound is undetermined to atmospheric water or when the noggin compound is glace from an aqueous solution. An anhydrous compound is a substance without water. thither are two parts to this lab. dissipate 1 which will be a known hydrate CoCl2 ?6H2O or carbon monoxide (II) Chloride hexahydrate, and Part 2 which will be an unknown hydrate.
Equations and Mechanisms * Moles of hydrate and water ratio: Moles of water Moles of hydrate * quite a little percent water in hydrate = fish loss during heating × 100% master copy large number of hydrate * Percent by business deal of water in the unknown hydrate: Moles of water (g) × 100 Moles of unknown hydrate (g) tool and Supplies Balance Two melting pots and lids Hot rest home Cobalt (II) chloride hexahydrate (CoCl2?6H2O) Tongs An unknown hydrate tabularise of Chemicals and corporeal Properties Name of Chemical| Molecular Formula| hero Mass| Appearance| Cobalt (II) chloride hexahydrate| CoCl2?6H2O| 147.746g/mol| Pinkish/ exit crystals| An unknown hydrate (Copper Sulfate pentahydrate)| CuSO4?5H2O| 181.113 g/mol| sullen grind| Outline of Experimental Procedure Part 1 1) fight crucible withou t hydrate before heating 2) personalit! y selective information 3) Weigh crucible without hydrate after heating 4) Record data 5) Add CoCl2?6H2O to crucible 6) Weigh it 7) Place crucible on hot plate 8) Record the color flip 9) Weigh crucible after heating 10) Find mass and moles of hydrate 11) Find mass and moles of water eliminated 12) Find mole ratio of water to hydrate Part 2 1) Do the same...If you want to get a full essay, order it on our website: OrderEssay.net

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