Experiment 10 11 Essay - 1203 Words

Experiment #10 #11 The Synthesis of Cobalt Oxalate Hydrate The Synthesis of a Nitrite Complex February 5, 2012 Chemistry 1211L - 146 - Spring 2012 Procedure 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†¦show more content†¦Theoretical yield: 0.900 g Actual yield: 0.500 g % yield: 55.6% For Synthesis of a Nitrite Complex Equation: SrCl2.6H2O + NiCl2.6H2O + 6 KNO2 - K2SrNi(NO2)6 + 4 KCl + 12 H2O The limiting reagent were SrCl2.6H2O and NiCl2.6H2O. Theoretical yield: 1.25 g Actual yield: 0.500 g % yield:Show MoreRelatedEssay about Sowbugs Preference Lab Report671 Words   |  3 Pagesthey will often dry out and die. The purpose of this experiment was to observe the trend of sowbug preference. Our hypothesis was that sowbugs prefer grass to sand as a ground covering because grass is more suitable to them due to its moisture level and that it contains decaying matter. In this experiment, we put 20 sowbugs into a container filled half with sand, and half with grass and documented their preference. The results of this experiment show that sowbugs prefer sand to grass. There are manyRead MoreThe Probability Of Picking A Starfish1220 Words   |  5 Pagestotal number (10). Therefore, the probability of the student picking a starfish is 3/10. The probability of picking a shark will be 3 sharks out of 10. This equals 3/10 The probability of whales will be 3/10 and the probability of dolphins will be 1/10. 2. 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