Chem. Lab: Tris(Ethylenediamine) Nickel (II) Chloride – Flashcards
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Percent Yield
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Actual amount of product/Theoretical amount of product x 100
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What balance was used?
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Top-loading
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Appearance of Solid NiCl2 x 6H2O
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Light Green with precipitate solid
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Appearance of NiCl2 x 6H2O solution
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Dark green liquid
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Appearance of ethylenediamine solution before adding the hydrate
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Dark green liquid
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Appearance of reaction mixture after adding ethylenediamine solution to the hydrate
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Dark purple liquid
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Appearance of reaction mixture after addition of acetone
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Light purple with precipitate liquid
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Color of the product after drying
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Light purple powder
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Mass of NiCl2 x 6H2O
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.500-.650 g
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Volume of ethylenediamine solution
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2.3-2.5 mL
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Mass percent of of ethylenediamine solution
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25%
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Mass of product (ethylenediamine solution)
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Mass of filter paper +watch glass +product - Mass of filter paper +watch glass
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Molar mass of NiCl2 x 6H2O
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237.6 g
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Moles of NiCl2 x 6H2O used
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Mass of NiCl2 x 6H2O / Molar mass of NiCl2 x 6H2O
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Molar mass of ethylenediamine solution
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60.1 g
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Limiting Reactant
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NiCl2 x 6H2O
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Molar mass of product
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310 g
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Molar mass of Copper (II) Chloride dehydrate
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170.6 g
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Why is it specified that only a minimum amount of water be used to dissolve NiCl2 x 6H2O?
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The product of the reactant is soluble in water
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What is in the filtrate?
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Parts of the acetone and water Small molecules of the product
