potential compounds by comparing our results to our research of other compounds. We determined the quantitative solubility of our compound by dissolving it in water until the solubility capacity was reached. By finding the solubility we were able to make inferences about the formation of a precipitate if our compound was involved in a chemical reaction1. We were able to compare our reading of solubility to online sources, allowing us to eliminate certain compounds that were completely out of range displayed
was to identify the unknown white compound. The chemicals used the 1st day of the lab contain 1mL of 0.1M AgNO3, 6M HNO3, 6M NaOH, 0.1M BaCl2 and 1 mL of 6M HCl these chemicals were specifically chosen for the ion tests after the unknown dissolved in water, as mentioned on lab archives. In our entire experiment we used distilled water because routine tap water can produce many problems when used in sensitive lab like this. Distilled water is used because it is important to eliminate ions and minerals
Sarah Min CHEM 143A: Section A03 A10627548 April 14, 2015 Lab Report 1 - Recrystallization and Identification of Unknown Introduction The main concept in this experiment is recrystallization. Recrystallization is the process where the solute (a crystalline material) is dissolved in a hot solvent. The heated solution is filtered (generally via vacuum or gravity filtration) and is returned back to its solid crystalline state when the solution cools down. Recrystallization is best for isolating and
Qualitative analysis, an analysis to determine the identity of a compound, was done on an unknown solution 4, passed by the Teaching Assistant at the beginning of the lab, to identify the cations contained. This unknown solution was known to contain two of four possible ions. The first section or Part A was to determine the existence of either lead ion or silver ion and the second section or Part B to determine the presence of barium ions or calcium ions. In addition, the cation flame test was used
Biology Report 6 Name : Tan Mei Jing Student No. : 2017141025 Subject : Paper Chromatography Group : 2 Date of Experiment : 31/10/2017 Date of Submission : 2/11/2017 Objectives To understand the principle and mechanism of paper chromatography. To investigate (and separate) the different pigments present in lettuce leaves by using the paper chromatography technique. Hypothesis Lettuce contains mostly chlorophylls (both α and β) for the green color. Results
ENGINEERING AND GREEN TECHNOLOGY BACHELOR OF ENGINEERING (HONS) PETROCHEMICAL ENGINEERING UGPA 2043 UNIT OPERATION I PRACTICAL GROUP: GROUP 10 DATE CONDUCTED: 9th of JULY 2015 TITLE OF EXPERIMENT: LIQUID-LIQUID EXTRACTION TUTOR: Ms. CHNG LEE MUEI LAB INSTRUCTOR: Ms. CHNG LEE MUEI GROUP MEMBERS: NAME STUDENT ID SEAH JIA CHUN 13AGB08317 TAN SHAO QI 13AGB01060 MOHAMED FAIZAL BIN HAJANAJUMUDEEN 14AGB01451 KHOR CHING HAO 13AGB04891 OBJECTIVE To operate liquid-liquid extraction unit and to explore
Forensic scientists help analyse evidence left at a crime scene. They can help as they have special techniques to study small or extremely damaged evidence. Sometimes, paint samples need to be anaylsed. Forensic paint analyses and comparisons are typically distinguished by sample size that precludes the application of many standard industrial paint analysis protocols. A forensic paint examiner's goal is to assess the significance of any observed differences. The absence of significant differences
HPLC Determination of Caffeine and Benzoic Acid in Soft Drinks OBJECTIVE: 1-To become familiar with the practice of high-performance liquid chromatography (HPLC). 2-To determine the caffeine and benzoic acid concentrations in various soft drinks. Chromatographic techniques are widely used in all areas of science because they allow the analyst to separate and quantify the components of a mixture. In this experiment you will use high-performance liquid chromatography (HPLC) to determine the amount
Questions: Motility is any movement by a cell, while chemotaxis, being more specific, is locomotion as the result of a chemical in the environment. After analyzing the data gathered, it appears that the S. oneidensis is chemotactic. For Plate I, growth was seen in both strips on the 1X Nutrient Agar (NA) side. Thus, for the strip on which the inoculation point was on the water and agar side, the bacteria moved in response to the nutrients being on the other side. For Plate II, growth was visible
In part A of this laboratory experiment Benzophenone, which is nonpolar and has a polar carbonyl group, was analyzed as partially soluble in methyl alcohol and hexane but insoluble in water. This is because the ketone carbonyl group in Benzophenone will make the molecule slightly polar and thus partially soluble in the intermediately polar solvent methanol and nonpolar solvent hexane due to Benzophenone mostly being highly nonpolar and hexane being nonpolar. However water is highly polar and therefore