Solutions Essay

molecule instead of the chemical identity, of a solution. By measuring the freezing point of a solvent and a solution, using the solvent, the molar mass can be calculated. When anything melts or freezes, the value, that it will melt or freeze, will always be constant, no matter the amount. In solutions, there is a least one solvent and a least one solutes, and usually the solution is composed of solvents and has a small percentage of solutes. Imagine the solution as a wall, and the solvents and solutes

using IV solution. After letting the tubing sit in distilled water for one hour, the mass of the bag increased 3%, which suggests that water entered the tubing – making the IV solution a

the concentration that was done on the first week. Three different concentrations of serial dilutions of KMnO4 were made when the concentration was varied. First, three test tubes and 4mls of water was added to each test tube. 1ml of 500 mM KmnO4 solution was added to the first tube. Then 1ml was removed from test tube 1 and put

One property of a solution is a colligative property. Colligative properties, within chemistry, are defined not by the type of solute particles, but by the concentration of the solute particles that are present. They can be defined by the changes that occur when adding solute to a solvent. There are four commonly observed colligative properties being, osmotic pressure, freezing point depression, boiling point elevation, and vapor pressure depression. A solvent, which typically is a liquid but can

added to the system. The observation of each addition was recorded. A new SbCl3 and HCl solution was then obtained and titrated with distilled water until a milky appearance persisted. At equilibrium, the concentration of SbCl3 at was 0.076 M and the concentration of HCl was 1.7 M. The equilibrium constant was 110. Next, an Fe(SCN)2+ solution was prepared. It was divided evenly between 4 test tubes, solutions were added and the observations were recorded. Fe(NO3)3 was added to test tube 2 and the

and equilibrium system to determine concentration and equilibrium constant, Keq. OBJECTIVES In this experiment, standard solutions of FeSCN2+ will be tested in equilibrium. Solutions of SCN- of an unknown molar concentration will be tested. Molar concentrations of the

was shown to be in a 4:1 relationship. This is accurate, as for every 1 unit of the 12.5um solution, there should be 4 times the amount of absorbance for the higher concentration (50um), where 12.5 x 4 = 50. There was a 1:2 ratio between absorbance and volume. With every 1 unit of the 100ml solution, there was 2 times the amount of absorbance for the higher volume (200ml), where 100 x 2 = 200. The solution of Riboflavin was diluted from 40µM to 5µM with water, to show how the greatest concentration

the final determination. From the results listed above, fluorenone was determined to be the neutral unknown compound due to the similarity of the melting points collected. When extraction is performed and hydrochloric acid is added to the organic solution, 4-nitroaniline forms a water-soluble salt while naphthalene remains in the organic layer. The 4-nitroaniline

the concentrate is mixed properly it will make a foam solution. On each container there is a marking which has a percentage on it. That percentage is how much of the ratio of concentrate to water is, and it needs to add up to 100%. An example is if you wish to create 100 gallons of foam and you have 5% concentrate you need 5 gallons and 95 gallons of water to have the correct solution. AFFF stands for aqueous film-forming foam. The foam solution has a low viscosity which helps it spreads rapidly across

subject is unable to taste saccharin and may not perform the saccharin fit test. NOTE to the Taste Threshold Screening: If the test subject eats or drinks something sweet before the screening test, he/she may be unable to taste the weak saccharin solution. l. If a taste response is elicited, the test subject shall be asked to take note of the taste for reference in the fit test. m. Correct use of the nebulizer means that approximately 1 ml of liquid is used at a time in the nebulizer