Solutions

As stated in the introduction the hypothesis for this experiment was that the solution beginning with the higher concentration of KMnO4 and placed in water with the warmer temperature will diffuse through the artificial membrane quicker than the solutions beginning with the already diluted solutions and placed in water at a cooler temperature. This occurring because all of the solutions are trying to diffuse to where it is less concentrated because they are eager to diffuse down its…

placing them into the solutions. Also, an important observation that some of the solutions took long time to fully dissolve, for instance, the sugar > 6 hours prior the experiment, and this was not the case in the salt. 3.2. Moisture content In this experiment, two setting were conducted to see the osmotic agents and temperatures effect. Figure 1 below shows both effects on the products. Figure 1. Shows two products’ moisture content (lines are not…

each of the sucrose solution concentrations based on the percent change of each potato’s mass. This question is used to help further understand water potential and how the differences in sucrose concentration affects it. Also, how water potential is relevant to the human body. This experiment shows how solution concentration affects water potential and how it demonstrates osmosis. During this lab potato slices were placed in varying concentration levels of sucrose solutions in order to observe…

solute B was about 278.4g/mol, which is close to given molar mass of octadecanol. Conclusion- This lab allowed us to determine the molar mass of the unknown solute B by finding the difference in freezing point temperature of the cyclohexanol and the solution with the unknown solute B. My experimental value for the molar mass was 278.4g/mol which means that solute B is octadecanol because its molar mass is 270g/mol. This means that my experimental…

diffusion of solutes and the osmosis of water through a semipermeable membrane, which was dialysis tubing. This experiment was done to examine, if the solution is hypertonic, hypotonic or isotonic. The result of this experiment was that tube 5 and 6 decreased in mass. Tube 2, 3 and 4 increased in mass. This is because in the hypertonic solution, water in the tube was flowing outwards, because the concentration of dissolved solutes was greater outside the tube than inside it. This…

synthesized in a liquid solution containing some stabilizing organic molecules, broadly termed as surfactants, which are bulky and insulating ligands. The individual NCs in the thin film are indeed separated by these ligands, which significantly inhibit the charge transport. One of the simple yet effective ways to enhance the electrical performance of NC TFTs is the ligand exchange approach,2,3 replacing the…

carrots soaked in solution A, one of our blue solutions, was 0.151 grams. Solution A had a standard deviation of 0.048. For solution B carrots, one of our clear solutions, the mean growth was 0.117 grams. Solution B had a standard deviation of 0.057. For solution C carrots, our other blue solution, the mean growth was negative, actually indicating a loss in weight. This mean loss was -1.426 grams. Solution C had a standard deviation of 0.121. We had another mean loss with our solution D carrots,…

Solutions is analyze as one substances formed by two or more homogenous mixture substances (Lowery, 2014, slide 11). These substances are also called the solvent and the solute. The solvent and the solute must be mixed in order to create the solution. Solutions are formed when magnitudes of positive and negative forces are attracted upon each other between the solute and solvent particle and are greater than the solute by itself and the solvent by itself. Almost anything can be a solution, but…

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, learn about the relationship between absorbance and concentration known as the Beer- Lambert law and see the relationship between moles, volume and molarity. The serial dilution technique was also used to dilute solutions to a lower concentration.…

test tubes were then prepared. The Spec 20 was set to 0% and a test tube of blank solution (water) was wiped off and placed into the Spec 20. Transmittance was then set to 100% to calibrate the machine. Next, five test tubes were prepared and labeled with one of the standard solutions of 0.05 M, 0.1 M, 0.2 M, and 0.5 M CuSO4 in them. The Spec 20 was set to 600 nm and % transmittance was measured of the standard solutions. Absorbance was calculated and recorded. Then, 2 g of solid CuSO4∙5H2O was…