Potassium permanganate

Determination of the Composition of Cobalt Oxalate Hydrate Experiment 12 Robbie Kinsey Partner: Debnil Chowdhury Chem. 1312-D TA’s: Russell Dondero & Sylvester Mosley February 9, 2000 Purpose 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. Procedure The powdered cobalt oxalate

Purification of a compound is also common practice and is most times done by recrystallization. This is where the solute is dissolved in a solvent at ambient temperature so that pure crystals form when cooled. With the case of an inorganic salt potassium permanganate in an organic solvent, a phase stage reactant is often used. The largest form of experimental error for this experiment was that of approximation, affecting solute-solvent ratios and thus the ability for the solute to dissolve. Since very

observation. After gathering all the data, we solved for the rate of diffusion of each using the formula. Rate= Final diameter-Initial diameter Time After finishing the Methylene blue experiment, we followed the same procedure to Potassium Permanganate. Each group presented the result to the white board, so that we can compare the results. We kept a record of the results and have a short conversation with our group mates in interpreting the results of the conducted experiment. Towards the

The concentration of Iron(iii) in Irn-Bru affects many things about the drink. Using UV spectroscopy the concentration of Iron(iii) can be calculated and compared to the stated value on the bottle. Iron(iii) is a transition metal ion that plays a key role in many important biological process, its concentration has to be carefully controlled by the body. A level of Iron(iii) that is higher than usual will cause damage to tissues, such as the liver and in extreme cases can be fatal. The amount of

1). It is the simplest form of carbohydrate. In this experiment, sulphuric acid, H2SO4 and potassium permanganate, KMnO4 is added into glucose with different concentration and the time taken for the purple pink colour of potassium permanganate solution to change to colourless is recorded. This is because glucose donates electrons to the permanganate

they contain a complex ion. A complex ion has a central metal ion, to which is then bonded with a neutral molecule that forms ligands. In this experiment, potassium trisoxalatoferrate(III) and potassium ferrioxalate will take part in purifying the product using recrystallization. A pH titration will be used to analyze the mass percent of potassium and iron, meanwhile, the oxidation-reduction titration will be used in order to figure out the mass percent oxalate in the finalized purified product. Once

Abstract: The experiment was done to demonstrate the effect of ADH on the volume and concentration of urine in order to demonstrate the control of ADH over blood plasma osmolarity. Since non-invasive methods were preferred the volume and concentration of urine was used in place of drawing blood. The results that we our anticipating are that ADH levels in the group of subjects that ingested the 6 gm. Of NaCl would increase over time in response to the increased osmolarity of the blood from all

Part A: Diffusion on a liquid in a liquid. I did an experiment with three different glasses of tap water from the faucet. All three cups measured the same which happened to be 13 cm from the top of the cup to the bottom of the cup. I let the water settle, and sit for about an hour so the temperature was the same for all three cups. I then placed one drop of food coloring into the first glass and waited for the coloring to reach the bottom. I calculated 93 seconds. I then went to the second glass

An investigation into the effects of varying seawater concentrations on two marine invertebrates’ osmoregulatory abilities; Carcinus maenas and Arenicola marina. Introduction The concentration of solutes in the bodily fluids of most marine invertebrates is roughly isosmotic to their environment (Raven, 2008). Because there is no osmotic gradient there is no tendency for the net diffusion of water away from the animal’s cells to occur. When a change in salinity occurs some organisms have the ability

In many ways, any living being is the product of water. The figures are relevant for this assumption: the human body contains 60% water. A newborn has at birth 64% water in his organism while the fetus in the third month of pregnancy has in his tissues, 91% water. As a man ages he starts to dry: around the age of 70, the body contains 46% water. The body is composed of 25% solids and 75% liquid material in which the solvent is water. Furthermore, even the brain tissue is composed of 85% water (Wedro