Potassium permanganate

Cell Membrane Transport Ard Orpilla Zoology 2011 Section 16 Manisha Rao October 6, 2014   Introduction Cells are the basic units of life. Everything alive consists of cells. In order for cells to perform their basic functions, it has to continuously seek homeostasis. This is done by structures within the cell. A structure within the cell is the plasma membrane, which regulates what enters and exits the cell. The cell membrane contains a phospholipid bilayer which causes the cell to have selective

this happens extremely slowly. In the presence of catalase, the reaction speeds up and can be stopped by using H2SO4¬ to measure the amount of hydrogen peroxide used over time. To measure the quantity used up over a specific time interval, potassium permanganate (KMnO¬¬4) is added to the solution to essentially “eat up” the leftover hydrogen peroxide from the reactions with the

This allows iron(II) to be oxidized to iron(III), hence the two reactants are permanganate (MnO4-) and Iron (Fe2+), and the products will be manganese (Mn2+) and iron (Fe3+). The two half-equations for the reaction can be seen below: Fe2+  Fe3+ + e- MnO4- + 8H+ +5e-  Mn2+ + 4H2O These combine and the overall redox reaction is described

The purpose of this lab was to better understand the workings of the catalase enzyme when used in substrates (hydrogen peroxide), whilst experimenting with different factors that may affect the result of the reaction. All experiments and activities A, B, C, and D accept the hypothesis given for that activity. Hypothesis A stated if the catalase is added to the hydrogen peroxide, then the product of the chemical reaction will be water and oxygen. By following the experiment procedure, we can conclude

Hypothesis of this experiment is that the fluid with higher molecular weight will diffuse at a slower rate and distance. METHODS AND MATERIALS: DIFFUSION OF DYE THROUGH AGAR GEL In order to assimilate diffusion through a permeable membrane potassium permanganate and methylene blue were used in experiment. The objective was to compare the rates at which the liquid compound of different molecular weight diffused through agar. This was achieved by obtaining agar in a petri dish with two wells to hold

In this lab we used catalase (enzyme), and this enzyme was a catalyst used to breakdown the hydrogen peroxide. An enzyme will bind with a substrate, then form an enzyme substrate complex, and then the new products then leave the enzyme. The enzyme binds with the substrate in the active site. The active site is where enzymes act. Enzymes do not undergo permeant changes during the reaction, (ch302). The catalyst is not part of the reactant, instead it is added to the reactant to speed up the reaction

The goal of the lab was to discover the concentration of phosphate in various colas in order to help with a project for a major cola company. Before we could accomplish this final goal, a Spec 20 was used to test three colors of food colorings. A Spec 20 is an instrument used to “measure the intensity of a light beam before and after it passes through a sample and compares these two intensities” (What does a Spectronic 20 measure). The instrument is able to measure the percent transmittance and

methydioxirane. This is a compound prepared using acetone as well as oxone. Using potassium permanganate makes another formation. The two methods yield two isomers for 1,2-cyclohexanediol, a trans and a cis. Trans has opposed dipoles and cis has same side dipoles, causing cis to be more polar. This difference in polarity is important for

A syringe was used to add potassium permanganate, one drop at a time, to the solution until a persistent pinkish brown color was obtained. The solution was gently swirled as drops were added. The amount of potassium permanganate used is proportional to the amount of hydrogen peroxide present, and was therefore used as the baseline. Data: Potassium Permanganate (ml) | pH Level | pH Level | pH Level | pH Level | | Control (7) | 6 | 5 |

2,3- Dimethyl- 2,3-butanediol weighed 1.20g, it was added to a 10 ml round bottom flask filled with 4 ml of sulfuric acid. This entire reaction was put into a simple distillation to be heated and distilled into a vial then collected when the mixture reached around 100 degrees celsius. Once the product was collected, the aqueous layer was removed and a total of 2 ml of saturated NaCl was added in order for the product to be washed. The organic layer was placed back in the vial to dry with sodium sulfate