Mixture Of Unidentified Organic Compounds Lab Report

All standardizations are performed in triplicate. Weigh out .1000-.1200 gram KIO3. Add 70-80 mL of deionized water. Swirl and dissolve. Add 3 mL of 6M HCl. Swirl and mix. Quickly titrated the brow-red solution with 0.1M Na2S2O3 until it is light yellow. Then add 3.5 mL of starch indicator. Titrate again until the dark color first disappears.

We know that that the end point of the titration is reached when, after drop after careful drop of NaOH, the solution in the flask retains its pale pink color while swirling for about 30

Atoms are the basic units of matter and all life is based on them. Life on earth is based on the element carbon. It is a highly versatile atom able to form four covalent bonds with itself or other atoms such as hydrogen and water. Atoms combine to form molecules and those that are carbon based are referred to as organic molecules. Organic molecules occur in four different types in living cells; carbohydrates, lipids, proteins and nucleic acids. They are also known as hydrocarbons due to the presence of both hydrogen and carbon. Carbohydrates are made up of carbon, hydrogen and oxygen in the ratio 1:2:1. They are important sources of energy and are classified in three main groups; monosaccharides, disaccharides and polysaccharides.

Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic, acidic, or remain neutral when mixed with other chemicals.

Experiment 55 consists of devising a separation and purification scheme for a three component mixture. The overall objective is to isolate in pure form two of the three compounds. This was done using extraction, solubility, crystallization and vacuum filtration. The experiment was carried out two times, both of which were successful.

pH was recorded every time 1.00 mL of NaOH was added to beaker. When the amount of NaOH added to the beaker was about 5.00 mL away from the expected end point, NaOH was added very slowly. Approximately 0.20 mL of NaOH was added until the pH made a jump. The pH was recorded until it reached ~12. This was repeated two more times. The pKa of each trial are determined using the graphs made on excel.

The data gathered and calculated in the experiment accurately portrayed the way the reactions would have taken place. The chloride analysis was a little bit off from other groups due to the fact that our AgCl was in clumps, creating less surface area, thus our product took longer to burn and may not have burned correctly compared to other groups; yet there are several experimental factors that could have caused us to have different results than other groups, i.e. different measurements for samples. Our sources of error could have included eye measurement error, timing of set solutions error, measurement errors, and small calculation errors. Among other variables, the calibration of the analytical balance and spectrophotometer could have

The proof (twice the % alcohol) starts at its maximum and goes down (as the alcohol evaporates). If we start with a high concentration of alcohol, we will get the azeotrope (95% alcohol, 5% water) for a while, then the concentration will decrease.

Students will carefully observe acts of aggression and prosocial behavior on television, report their observations, and analyze their data to draw conclusions.

Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products.

The luminous yellow flame is smoky because no air is entering the burner and hydrocarbon is converted into carbon dioxide

Aim: To classify unknown substances according to their structure type and to observe how the structure of materials affects their uses.

In the experiment, we were given 6 substances and their identities. We were also given 2 substances with unknown identities, labeled substance A and substance B. Our goal of the experiment was to identify both substance A and substance B as one of the 6 known substances. To achieve our goal, we needed to create an experiment to give us results that we could trust to give us the correct identity of substance A and substance B. Before we could create an experiment we had to do some background research. In our back ground research, we found that conductivity is the property of conducting electricity. To test for conductivity, we used a conductivity meter.

Creative Biolabs offers a wide range of metabolic disease models, including genetic, nutritional, chemically-induced and a selective combination, and the most comprehensive relevant services with professional expertise. We have talented experts and scientists who are willing to help to set up a detailed research plan based on your specific project objectives and provide tests to evaluate the efficiency of potential treatments.

“The Organic Effect” is a video that conduct an experiment on a family for two weeks. The video was promoted by an organic food store The Coop grocery in Sweden and the Swedish Environmental Research Institute ( Hall ). In this video a family of five switched from conventional food to organic for two weeks. Before beginning the experiment urine samples were taken and analyzed for conventional pesticides food. It turned out that they had different insecticides, fungicides, and plant growth regulators inside their bodies. The experiment began and everything in the kitchen was replaced from conventional to organic food only ( Hall ). Then Another sample of urine was taken and almost all the pesticides disappeared; the level dropped drastically ( Hall ). At the beginning of the video the mother explained why her family chose to eat conventional food, and it was because it’s less expensive for her big family. However, at the end of the experiment she said that she was reevaluating her decision because of her children ( Hall ).