Solutions Essay

for freezing to slow while not affecting the rate of melting. This phenomenon is also referred to as freezing-point depression. As the molality, or the amount of solute (ex: salt) in a solution (ex: salt-water) is increased, the chemical potential of the solution decreases causing the freezing point of the solution to also decrease (Echipare & Harju, 2015). However, one might ask why salt is the specific solute used to melt ice on roads, when freezing-point depression applies to many combinations

oral and parenteral formulations to improve dissolution of poorly soluble drugs from solid-dosage forms. Povidone solutions may also be used as coating.

Purpose : The experiment this week had two different purposes. The first is to teach us about freezing points. This lab was designed to show us the freezing point of a pure solvent, in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment, we got to observe osmosis as well as understand dialysis. Procecure : Part 1. Colligative Properties 1. Create a water bath

sucrose solutions (0M, 0.2M, 0.4M, 0.6M, 0.8M, 1M) affect the mass of potato cores when in sucrose solution? Background information: Osmosis is the diffusion of water across a membrane to create an equilibrium between the levels of concentration of a solute both inside and outside the cell. In this case the solute will be sugar as the potato core will be immersed in sucrose solution. There are 3 potential states that the cell could be in depending on the type of solution: Either the solution is hypotonic

In our design, it was determined that a base following a triangular pattern made of bundles of spaghetti, would be required for a strong foundational support. Initially, we planned to use tape to hold these bundles together, however tape was not permitted. We therefore had to use glue to construct the bundles together. Every feature of the bridge was constructed using these bundles, from the triangles in the base, to the supporting poles, which held and connected all the features together. After

lab the students were able to distinguish water potential in both hypotonic and hypertonic mixtures. It was perceived that the solution with the highest sucrose concentration was the purple mixture in contrast the blue mixture was at equilibrium, it was at zero. As the lab proceed and data was collected it was observed that the dialysis tube which contained the blue solution had an equivalent amount of molarity as the water that was in the beaker, to reference zero morality or equalibrum. 4. Objective:

In the first step the benzoic acid had to be dissolved in the solvent, water, so that the impurities can separate from the benzoic acid. Next, the solution was cooled slightly to add decolorizing charcoal in order to remove the impurities. Then, the solution was heated up again for 20 minutes. Then, the solution was filtered so the charcoal wouldn’t be in the final product. Finally, when filtering with the Buchner funnel the water was cooled this was used to prevent the benzoic

Ive actually conducted an experiment where three potato strips were put into three different solution: distilled water, 10% NaCl, and 85% NaCl. The potatos were left in the solutions for fortyfive minutes. The experiment is to test different versions of osmosis. After fortyfive minutes had passed I took the potatos out of the solutions, and observed the results. The potato that was in the 10% NaCl solution was still firm, but slightly bendable. The potato strip that was in the distilled water was

How does viscosity affect the speed of a sinking marble? I did this project because I wanted to know what viscosity was.Also I wanted to know how to measure it. Viscosity is the thickness of a liquid, and also what makes a liquid flow slower or faster. For example milk and honey. Honey would be thicker than milk so the honey would flow slower than the milk. Viscosity also takes place in molecular bonds. For example, if a fluid is very viscous (like honey), it would have stronger molecular bonds

The correct theoretical empirical formula for the Hydrous Copper Sulfate solution is CuSO4 * 5H2O. From the data and results of calculation from this experiment, the empirical formula that was found during the process is CuSO4 * 5H2O. The sum of the percentage from the water, copper, and sulfate found in the solution added up to be 102%, a little over the normal 100%. From the least to greatest percentage of error, copper (Cu) with 2.291%, water (H2O) with 2.77%, and sulfate (SO4) with the greatest