Potassium dichromate

Analysis: Safety Analysis: A number of safety precautions needed to be adhered to in order to maintain a safe and controlled working environment. Acetic acid and potassium dichromate are two examples of hazardous substances used throughout the practical, with their effects being intense redness, potential blisters, inhalation is potentially irritant to lungs etc. In order to prevent all contact with these substances, paper towels were used to wipe the glassware in order to remove any traces. Sulfuric

This experiment was about determining the rate of that ethanol produces ethanal by potassium dichromate. The ethanol reacts with chromic acid to produce ethanal, and the rate was measured using a spectrophotometer. Equation: 6 H3O(aq) + 3 CH3CH2OH(aq) + 2 H2CrO4(aq) → 3 CH3CHO(aq) + 2Cr2+(aq) + 14 H2O(l) Second Order Rate Law: Rate = k[ CH3CH2OH][H2CrO4] This second order reaction behaves like a “pseudo” first order reaction when one of the two concentrations is much greater than the other. In

together it produced a dark blue with dark specks solution. I then added NaOH to revert back to the original solution but I got a yellow color with brown specks instead. Exercise 1: Equilibrium of Chromate and Dichromate Data Table 1. Chromate-Dichromate. Color of Chromate Color of Dichromate Number of drops of NaOH to shift chemical system Yellow orange 14 Data Table 2. Endothermic and Exothermic Shifts. Reaction at Room Temperature Reaction in Cold Water Bath

comparisons are seen, Potassium Permanganate increased after three minutes ahead and remained its value until the sixth minute and it remained constant, Potassium Dichromate increased at the sixth minute and retained its increase until the ninth minute and then remained constant, while Methylene blue remained constant all throughout in the 30 minutes span of time. Although the average rate of diffusion calculated in Table 2 show no difference in Potassium Permanganate and Potassium Dichromate, as seen in

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

Case Study: Newsflash! Transport Proteins on Strike! 1. What is the meaning behind the PHOSPHOLIPIDS’ chant? Phospholipids make up most of the cell membrane, in a phospholipid bilayer. Phospholipid molecules form two layers, with the hydrophilic (water loving) head facing the extracellular fluid and the cytosol (intracellular) fluid, and the hydrophobic (not water loving) tails facing one another. The cell membrane is constructed in such a way that it is semipermeable, and allows oxygen

Assignment 14: Popular, fad, and Weight Loss Diets Taylor Skaggs Roll #735 Oklahoma State University Principle of Human Nutrition 2114 Sec. 007 The DASH Diet 1. Key concepts of the diet: A. What is the DASH diet, and who developed it? The DASH diet stands for Dietary Approaches to Stop Hypertension. The DASH diet was promoted by the United States National heart, lung, and blood institute. The diet was designed to help prevent and control hypertension. In addition to its effect on