Solubility

Introductory Chemistry 1110 Qualitative Analysis Using Precipitation Reactions Lab reports are due week of September 29 – October 3, 2014. Your lab report must contain the following information: Experimental data may be collected with other students in introductory chemistry labs. However, I understand that sharing information required for a lab report or unknown submission (including but not limited to word processing or spreadsheet files, calculations, graphs, conclusions and additional

This experiment demonstrated the separation of pigments based on relative polarity and proved to be a substantial way to separate compounds. The results were much like that of an experiment performed, which separated carbohydrates in a very similar method with the use of paper chromatography (Inome, Y., & Yamamoto, A.). Proper pipetting technique, which is described by John Husler, was also demonstrated in this experiment. The technique was followed as to prevent contamination and deliver the right

The first reason why I think it was powdered sugar, was because of the water test. In the water test we drop one or two drops of distilled water on the substance. In the water test for powdered sugar and the mystery substance, the same reaction happened. For both, the water dissolved easily, and made a cloudy liquid with no bubbles. The powdered sugar was the only one that matched the mystery substance’s reaction. My group also did the starch test. In the starch test you drop one or two drops of

The purpose of this lab was to separate a 1:1 mixture of Acetanilide and benzoic acid through base extraction then purify these substances via recrystallization. In addition, we were able to analyze and deduce how efficient we were in purifying the substance through IR Spectroscopy, NMR spectroscopy, and by comparing melting points. This experiment proved to be partially successful. Through base extraction, we were successful in separating benzoic acid from Acetanilide. The strong base help in separating

Predicting Precipitations Lab Report: explanation data of lab along hypothesis, and identifying possible errors of lab for further investigations. The reactions from 1A through 1D all have a precipitation formed because physical changes appeared. AgNo3 is a clear solution; when it is mixed with a yellow FeCl3, a precipitate is formed in a different color than the original colors. After a while, the precipitate became slightly solid. For 1B and 1C, the solid was formed in similar ways, it might

In this lab we recovered lead ions from a solution by creating a precipitate, lead(II) iodide that could be separated from the mixture. We create lead(II) iodide in this experiment by mixing a solution of lead(II) nitrate and a solution of potassium iodide. The reaction they create results in the bright yellow precipitate lead(II) iodide upon contact, Although this substance may be very interesting to look at, this and all other types of lead extremely dangerous to our health. Although contact to

Introduction Solutions are a combination of compounds that have different intermolecular forces, pH, pKa, and other chemical and physical characteristics. These characteristics are critically involved in how molecules interact when placed in the same container. For this experiment, Sodium hydroxide (NaOH) and hydrochloric acid (HCl) was used for the amino acid titration, and potassium hydrogen phthalate (KHP) was used for the standardization of the NAOH solution. The hypothesis for this part of

Purpose: To accomplish this experiment, firstly will be analyzed a solution that contains six known cations and then, will be analyzed an unknown solution with the purpose of discovering the cations present on it. For this experiment will be conducted a qualitative analysis on the solution to identify the substances presents on the solution. In addition, this experiment will endow ones with a different perception about the nature of ions. Chemicals and Materials Required: Materials: 8 test tubes

1. What reagents were used during the experiment, and were some reagents unknown? " Mixture #29, which contained fluorene and either 2-chlorobenzoic acid, 3-chlorobenzoic acid, or 3-methyl benzoic acid was used. NaOH, diethyl acetate, and HCl were also used. 2. Which reactions occurred between those reagents? Why was the experiment performed? " The unknown acid was deprotonated by NaOH and protonated by HCl. The experiment was performed to separate the unknown acid from fluorene and to identify the

Explain what is meant by a positive test for an ion. A positive test means that the ion being tested for was found. Describe two types of changes that demonstrate a positive test in this lab experiment. One change that demonstrates a positive test in this lab is precipitate forming. If silver nitrate solution is mixed with a substance and a precipitate forms, chloride ions must be present in that substance. Another change the demonstrates a positive test in this lab is a colour change to a dark