Essay about Experiment 10 & 11

1206 Words Oct 24th, 2012 5 Pages
Experiment #10 & #11

The Synthesis of Cobalt Oxalate Hydrate
The Synthesis of a Nitrite Complex February 5, 2012 Chemistry 1211L - 146 - Spring 2012

The Synthesis of Cobalt Oxalate Hydrate
Place 100 ml of distilled water in a 250-ml (or 400-ml) beaker. Add 1.26g of oxalic acid dihydrate (H2C2O4.2H2O) and 1 ml of concentrated ammonia. Stir the mixture until the solid has dissolved completely.
Dissolve 2.34 g of cobalt chloride hexahydrate (CoCl2.6H2O) in 100 ml of water in an Erlenmeyer flask. While stirring the oxalic acid solution constantly, add the cobalt chloride solution drop by drop. Let the mixture cool in an ice bath. A precipitate will form slowly.
After the precipitate has had a
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For synthesis of a Nitrite Complex
%error = 0.500 -1.251.25 x 100%=60% error
In this experiment, my professor assumed that the mass of the product (Nitrite Complex, K2SrNi(NO2)6) was 0.500 g.

The masses of the products were assumed 0.500g, and the goals of those experiments were attained. I could learn how to work with hydrated compounds and to weigh out specified masses quickly and accurately. I was able to work with toxic compounds, and I learned how to be safe if one of those toxic compounds get on my skin, in my eyes.
In experiment of the synthesis of cobalt oxalate hydrate, the limiting reagent was CoCl2.6H2O, and theoretical yield of CoC2O4.2H2O was 0.900 g. %error in this experiment was 44.4%
In experiment of the synthesis of a Nitrite Complex, the limiting reagents were SrCl2.6H2O and NiCl2.6H2O, and theoretical yield of K2SrNi(NO2)6 was 1.25 g. %error in this experiment was

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