Cobalt Complexes

1. The first experiment is Preparation of a Cobalt Amine Bromide Product ; Synthesis #3 was used to create the compound. Added 5 grams of cobalt carbonate to 20 mL of hrdrobromic acid in a beaker. Noticied a slight color change to dark purple. Solution frothed after it settled I mixed in 15mL water and

The objective of this lab was to use prior knowledge about the Law of Conservation of Matter and of different types of chemical reactions in order to evaluate if aluminum disappears during the reaction and copper appears. The reaction that occurred between Copper (II) Chloride and aluminum was a single replacement reaction. Clear signs that a chemical reaction took place include heat release/temperature change, color change, and formation of a precipitate. When a single element, in this instance aluminum, replaces another element in a compound, copper, a single replacement reaction occurs. A basic formula for these reactions is AB + C → AC + B.

The product was placed in a Craig tube and several drops of hot (100°C) solvent (50% water, 50% methanol, by volume) was added and heated until all of the crystals dissolved. The Craig tube was plugged and set in an Erlenmeyer flask to cool. Crystallization was induced once the mixture was at room temperature by scratching the inner wall of the tube. It was then placed into an ice bath for ten minutes until crystallization was complete. The tube was then

The compound aquapentaamminecobalt(III) Nitrate, [Co(NH3)5OH2] NO3, is a metal complex bonded to the molecule nitrate to attain a neutral charge. The synthesis of this molecule is a more complex one, requiring the recrystallization of an intermediate species. When the complex has been formed and isolated via filtration, the complex can be reacted with various aqueous solutions, one being dimethyl sulfoxide, C2H6OS. When reacted these reagents form the compound Co(NH3)5(OS(CH3)2)3+, H2O, and NO3-, though not inn this ratio. Specifically the aquapentaamminecobalt(III) molecule can be used to study the sixth coordination site on the molecule where the later is bound. Because of the weaker bond between the cobalt ion and the water

Overall, the experimental results were similar to the results needed to identify the cobalt ammine halide coordination complex. The color of the compound was dark purple and it looked just as expected as the experiments leading up to the collection of the synthesized cobalt compound had little to no errors. The percent yield of the compound was not 100% due to small errors throughout experiments such as losing some of the compound during transferring, more liquid evaporating than desired, and not measuring volume to exact accuracy and precision every time. For example, when the graduated cylinder was filled with 100 mL deionized water and the liquid was poured into a flask, the liquid measured over the 100 mL mark on the flask, meaning that

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The purpose of this lab was to determine the percent cobalt and oxalate by mass, and with that information, the empirical formula for cobalt oxalate hydrate, using the general formula Coa(C2O4)b.cH2O.

I started with elemental copper metal and then reactions occur step by step as follows:

Copper has a very important biological and environmental significance, and is considered one of the most important elements all over the world. Within this experiment, copper’s ionic and elemental forms will be examined. This will be done by exposing copper to a series of chemicals and transforming copper into a nitrate, a hydroxide, an oxide, a sulfate, and then changing it back to its original element, copper. This process is known as the Copper Cycle, and can be used to study and observe the different types of chemical reactions that exist within our biological and environmental systems.

Cobalt, the 27th element on the periodic table is the study of this biochemical discussion. Blue in its natural form, it has many uses. To explain further, it uses either come naturally or medicinally. Also, there is important history about cobalt that dates backs to ancient times. Controversy also comes in place when speaking about elements and their interaction with humans and their environment. The current research being done on cobalt is very important as it intervenes with the next topic. The future; how much do we have? Is the right amount of money being put into research? And Is there any research or new ideas on the future uses of cobalt? These questions are ready and want to be answered. Reviewing and processing the words on this page hopefully you will get a further insight to these questions. Ultimately, you will learn more about cobalt’s part in biochemistry.

There are countless varieties of natural resources at our disposal to make our lives easier. Cobalt is very rare, slightly toxic, brittle metal that can be used for treating cancer, making super-magnets, making jet engines, high temperature cutting tools, bombs etc. Cobalt is a limited natural resource found within the Earth’s crust, and as such it is necessary that the world’s supply is conserved by limiting our usage of currently mined Cobalt as well as trying to explore for new sources of Cobalt.

This experiment initially involved the synthesis of an iron (III) oxalate complex with the general

The chemical symbol for Cobalt is self-explanatory, Co. The word Cobalt comes from the Greek word for mine, cobalos. Cobalt is atomic number 27 putting it right in the

The Fe-Co deposit obtained from ethaline and reline was successfully deposited on a copper substrate by maintaining a steady potential of 3.0 V at 60℃ for 2 hours. The Fe-Co coating from reline was dark black in colour, whereas the Fe-Co coating from ethaline appeared to show a tint of grey on the surface. The Fe-Co deposits in both liquids were smooth and uniform. Figure 6.3 a and b show the SEM images of Fe-Co deposited from ethaline and reline. It is clear from the images that there is a variation in morphology from both liquids. The Fe-Co coating from reline appears to show a more nodular shaped structure which is evenly spread on the surface of the copper substrate when compared to Figure 6.3 a.

Cobalt-60 or also known as co-60 is one of the many isotopes of the element, Cobalt. Cobalt has 28 isotopes other than Cobalt-60, these include: Cobalt-47, Cobalt-48, Cobalt-49, Cobalt-50, Cobalt-51, Cobalt-52, Cobalt-53, Cobalt-54, Cobalt-55, Cobalt-56, Cobalt-58, Cobalt-59, Cobalt-60, Cobalt-61, Cobalt-62, Cobalt-63, Cobalt-64, Cobalt-65, Cobalt-66, Cobalt-67, Cobalt-68, Cobalt-69, Cobalt-70, Cobalt-71, Cobalt-72, Cobalt-73, Cobalt-74, Cobalt-75 and Cobalt-76 (Jefferson Lab, n.d.). Co-60 is a synthetically produced radioisotope with a half-life of 5.27 years (Centers for Disease Control and Prevention [CDC], 2014). It decays through beta particles and gamma radiation (CDC, 2005). Cobalt-60 decays into stable isotope, Nickel-60 through beta minus decay (radioactivity.eu.com, n.d.).