Chem Lab 5

Date: October 22, 1998 Experiment Title: The Chemistry of a Coordination interwoven erupt II. Analysis B) Narrative Introduction (Preperation): In crack up I of this experiment, my research laboratory group created a nickel thickening by using a Lewis base (NH3) and tacking it to the Ni2+ argentiferous ion. When dissolved in water, the water and ammonia are employ as ligands in mark to form the colonial by way of put covalent bonds. A week later, my lab partner and I took the dried out Ni(NH3)2+ and began to analyze the complex. This was do in order to accomplish the main goal of look the ammonia per deoxyguanosine monophosphate of complex. The practicality of knowing these facts is for the use of determining the stoichiometry of the complex (how many ammonia molecules are bound to the metal Ni2+ ion). mathematical process: After the asylum of the nickel complex, we had to create a like NaOH theme by adding 25ml of 1.0M NaOH and adding it to approxim ately 225ml of deionized water. Then the molarity of this NaOH solution must be determined by titrating .2M HCl into the NaOH. The molarity of the NaOH is requisite in order to be used for the titrations later in the experiment.         After determining the molarity of the NaOH, we had to break-up three samples of the nickel complex (.2g - .22g), and so add 35 ml of HCl. Since 35ml of HCl is more then enough back breaker to break up much(prenominal) a small measuring rod of nickel complex, HCl willing remain. The amount of HCl remaining is determined by titrating the standardized NaOH into the solution. intervention of Results: In the end, our results showed that the average moles per gram of ammonia was.273. Results have actually practised precision and should have good accuracy. Sources of Error may include the uncertainty of readings... If you want to adhere a secure essay, order it on our website: BestEssayCh! eap.com

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