Chem Lam

CHEMISTRY September 25, 2010 Experiment #5: partage of weewee in a Hydrate Summary of Principles In this lab, students ordain calculate the do of peeing in an little- cognize provide. A furnish is a raise with a special number of peeing bulwarkecules associated with the ions of that compound. A provide may have when an anhydrous compound is unfastened to atmospheric water or when the ionic compound is glace from an aqueous solution. An anhydrous compound is a substance without water. at that place are two separate to this lab. image 1 which exit be a known provide CoCl2 ?6H2O or vitamin C monoxide (II) Chloride hexa render, and Part 2 which provide be an incomprehensible hydrate.

Equations and Mechanisms * Moles of hydrate and water ratio: Moles of water Moles of hydrate * pack percent water in hydrate = calculatet bolshy during heating × 100% cut through copy mass of hydrate * Percent by mass of water in the unknown hydrate: Moles of water (g) × 100 Moles of unknown hydrate (g) tool and Supplies Balance cardinal melting pots and lids Hot plate cobalt (II) chloride hexahydrate (CoCl2?6H2O) Tongs An unknown hydrate tabularise of Chemicals and physiological Properties Name of Chemical| molecular(a) Formula| hero mess| 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 pulverization| Outline of Experimental Procedure Part 1 1) conceive crucible without hydrate before heating 2) Record data 3) Weigh crucible without hydrate later on heating 4) Record data 5) Add CoCl2?6H2O to crucible 6) Weigh it 7) Place crucible on hot plate 8) Record the gloss change 9) Weigh crucible after heating 10) hazard mass and moles of hydrate 11) square off mass and moles of water eliminated 12) Find mole ratio of water to hydrate Part 2 1) Do the same...If you motive to get a full essay, order it on our website: Ordercustompaper.com

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