Sulphate solution

Testable Question: If iodine diluted in water (iv and solvent) is put in a plastic baggie (control) how will diffusion occur while put in a beaker with diluted cornstarch (dv and solute)? Background research: Iodine is an indicator for cornstarch and will turn purplish-black when reacting with it. In this case iodine is the solute and cornstarch is a solvent. Diffusion is where molecules go from an area of low concentration to high concentration until molecules are evenly spread out. Plastic is

to understand osmosis, people must understand the different types of concentrations that can be present within solution. One of them is an Isotonic solution where the concentration of dissolved particles is equal to that of a cell’s. Another is a hypertonic solution where there is a higher concentration of dissolved particles then inside the cell. And lastly there is a hypotonic solution where there are less dissolved particles than inside the cell. As dissolved particles move to a region of lower

the freezing point of solution, different solutes are dissolved in solvents. When a solute is combined with a solvent, such as dissolving sugar (solute) into water (solvent), a solution is formed. The process of decreasing a freezing point of a liquid by dissolving a solute in a solution is referred to as freezing point depression. The freezing point is a colligative property, which means that the freezing point depends on the number of solute particles dissolved in a solution. For example, CaCl2

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