Solubility Postlab Report

1. Record your hypothesis about what will happen when Biuret solution is mixed with the solutions from test tubes 1, 2, 3, and 4 here. Be sure to use scientific reasoning to support your hypothesis.

The goal of the solubility experiment is to determine weather a substance is soluble or insoluble using various techniques. In part A of the experiment the solubility of different substances in different solvents will be investigated. To achieve the goal of part a 40 mg of benzophenone will be placed into test tubes. Each test tube will contain a different solvent and one will serve as a control. A spatula will be used to stir the contents in the test tube, once this step is complete it will be determined if the solid is soluble, insoluble, or partially soluble. Like part A, part B will also test the solubility, however the solubility of different alcohols will be tested to do this 1 mL of water or hexane will be added to each test tube

(b) Explain each of the following in terms of the properties of water. You are not limited to the three

6. The solubility of the solids were tested using a micro tray, by placing them in water and oil to observe their polarity,

Substance A and B were weighed; Substance A weighed 0.502 g and substance B weighed 0.503 g. Both substances were put into two different test tube with approximately 8 ml of DI water into the test tub. Substance A and B were stirred and B dissolved while A did not. This shows that B is soluble in water compared to A. Thus, shows that B is soluble in water than A. The reason why B is soluble in water is because it has a higher dipole moment than A. With a higher dipole moment, it shows that it is soluble in water since it is polar and the bonds were easily broken.

The solubility of a substance fundamentally depends on the solvent used, as well as on temperature and pressure. Forms of dosages, like tablets, capsules, and solutions, consisting of the drug plus

Draw the dipole moment of the chair and boat configuration. Which of those structures will dissolve better in water and why?

If the solutions are not mixed incorrectly then the results will come out the same way. The purpose of this study is to show the effects of tonicity with

The purpose of using solubility analysis on an unknown is to narrow the possible unknowns given based on the solubility analysis. Acetone was a control for ketone and was soluble in water. Hexanal was a control for an aldehyde and was insoluble in water due to intermolecular forces, such as an increased amount of hydrophobic area rather than hydrophilic area. As a result, by identifying the solubility of the

Solubility Lab Report The purpose of this lab was to demonstrate the solubility of compounds created through reactions between certain dissolved substances. The solubility or insolubility of these compounds creates a visual demonstration of solubility rules. To obtain the data, the molar mass of each compound was calculated, and divided by 100 to determine the mass (in grams) needed. The compounds used in the lab include KNO3, Na2CO3, NH4Cl, NaOH, Pb(NO3)2, K2CrO4, AgNO3, CoCl2, Ba(NO3)2, CuSO4, and NaI. Filter paper was placed on a scale and tared, and the correct amount of salt was measured using a scoopula.

For part 2 of the experiment the values for acetaminophen, aspirin and ibuprofen from the pills were lower than the acetaminophen, aspirin and caffeine solutions. According to Encyclopedia Britannica, solubility describes when a substance dissolves in a solvent to make a solution. Some substances that were used in this experiment were acetaminophen, aspirin and ibuprofen. The solvent was water. Those substances were able to dissolve in water because they were polar and water is also

Solubility – Very soluble (water), Freely soluble (methylene chloride, chloroform, alcohol), Slightly soluble (acetone) and Insoluble (ether).6 Melting point - 120°C or 248°F.5

Prepared 2 tables in the lab notebook with solutes and 3 test solvents which are : acetonitrile, cyclohexane and water. One will be for the solubility prediction and another one for the actual data. Predict whether or not the solute will be soluble in the 3 solvents on the table. Compare the IMF in solute and solvent to predict solubility. If soluble write (S),slightly soluble(SS) and (I) for insoluble and which IMF will be the dominant one. Starting with water as the solvent.Obtain 8 test tubes and label them with the name of solutes: acetone,cyclohexane dichloromethane,acetonitrile ,glucose,benzoic acid,sodium sulfate and oleic acid. For the solutes, either weigh out 0.05g of solids or add 10 drops of liquid into the test tubes. Add 1 mL or 20 drops of water to each test tube and stir.

Water has many properties and functions. One of them is its ability to be a solvent. A known face is that water is called the “universal solvent” because it can dissolve many substances. This property can be very useful in everyday life, like inside our bodies to the medicines we take. For the activity, the students will test different solids and liquids being added to water and will see if the substances dissolve or not. This hands-on activity will include everyone to participate and to observe some a property of water. The students will fill out an observation worksheet in order to write down and learn from what they see in each trial.

Another factor affecting the solubility of the olive oil, vegetable oil, crisco, and lard is the principle of hydrophobic interaction. Hydrophobic interaction refers to when nonpolar solutes are in the presence of polar solvents, mainly water. When this happens, the