Buffer solution

mixture with a high viscosity. It was deemed soluble as the mixture also produced heat- an exothermic reaction. The results between the cyclohexene and the sulfuric acid were possible due to the attraction forces between a positive hydrogen ion (in solution) and a negative oxygen ion in the sulfuric acid- a carbon from the double bond (alkene) attaches to the oxygen atom (sulfuric acid). This type of interaction is called an electrophilic addition reaction (Clark, 2017). Therefore, cyclohexyl…

for students to learn how to use a spectrophotometer to find the absorbance of four known copper (II) sulfate solutions, four copper (II) sulfate solutions that were created by dilution, and one unknown copper (II) sulfate solution. The purpose of this experiment was to help students learn how to use the Spec-20, which is a machine that measures the transmittance and absorbance of a solution, learn about the linear relationship between absorbance and concentration known as the Beer- Lambert law…

IV. Discussion The Concentration Gradients is known as known as diffusion. They are spontaneous process because there is no energy input at the beginning (Reece et al., 2011). Each substance could diffuse to its own concentration gradient without affected by the concentration of other substances (Scott 2015).In the first experiment of the Concentration Gradients. The color of the clear water was expected to change into the color of the potassium permanganate dye, which was purple. Observation…

The hypothesis that if sucrose concentration is placed in one of the model cells then the rate of osmosis will increase was supported by the data in this study. To start with, the tap water without any sucrose concentration (M) started at 4.87g and ended with almost the exact same mass after 60 minutes had passed. On the other hand, when 1.20 M of Sucrose Concentration was emerged in water for 60 minutes and pulled out, its mass went from 6.48g to 9.03g.. Osmosis is the net flow of water…

Using salt solutions to observe osmosis in potatoes. D’OnJanea Washington Abstract In the lab we will be using potatoes. Potatoes are members of the family Solanaceae. Solanaceous plants originated in the new world, and the potato and its relatives were first introduced to Europe in the 16th century. The edible part of a potato, the tuber, is derived from the potato stem. It is rich is starch and has some protein just under the skin. These nutrients are stored in the potato and are intended…

Solubility of Chemical Compounds Lab Victoria Chanderpaul Tasneem, Zarrin Ms. Rungee February 6, 2018 February 13, 2018 Reaction of Chemical Compounds When Added to Water Introduction/Purpose: The purpose of this lab was to gain an understanding of how different chemical compounds react when added to water. Hypothesis: If different pure substances are dissolved in water, then there can be an understanding of the difference between the solubility because each chemical compound have…

THE EFFECTS OF OSMOSIS INTRODUCTION Osmosis is the process where molecules of a solvent are prone to pass through a semi-permeable membrane, going from a less concentrated solution to a higher concentrated solution. Doing this equalizes the concentrations on both sides of the membrane. Our question throughout the experiment was; What effects do the different concentrations of sucrose have on the rate of osmosis? The hypothesis was; If the solute concentrations do effect the rate of osmosis,…

variable was the zebrafish embryos after they were exposed to the C4. In addition, 2 controls were set up, containing a ocean/embryo solution, and the control was used to compare the effects between the solutions containing C4 and the solutions containing no C4. Furthermore, 2 controls were used because 2 experiments were conducted one containing a larger solution of C4 and the other containing a trace amount of C4. The hypothesis stated that if the zebrafish embryos were exposed to…

discuss the potential benefits of one or more of the solutions for finance that are available by SAP. For each solution, these benefits will be analyzed and I will determine if I agree with the procedures and explain why or why not. Lastly, information from the previous assignment will be used and a determination whether or not this enterprise module will be useful to my organization. Definitions First, before we can get into evaluating the solutions that are provided by SAP for the finance…

0.20 g of adsorbent was added to 20 mL of 50 mg/L dye solution and Vortex at 150 rpm for various time intervals at 5, 10, 15, 30, 60, minutes. The above steps were repeated using dye concentrations of 100, 150 and 200 mg/L dye solutions. Adsorbent dosage is an important parameter because it determines the capacity of adsorbent for a given initial concentration of dye molecules. Then their % absorbance’s were calculated by spectrophotometer (λmax=410) and thus amount adsorbed were calculated.…