only): aldehyde ( carboxylic acid |n/a | | | | |reagents: potassium dichromate (K2Cr2O7) in sulphuric acid (H2SO4) | | |conditions: warm under reflux |
Premium Amine Amide Amino acid
Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
Premium Polymer Solvent
Experiment 1: Isolation of Casein from Milk * pH of milk – 6.6 * milk = 87.1% water‚ 4.9 % CHO 3.9 %‚ fats‚ 0.7% minerals Experiment 2: Protein Hydrolysis and Characterization | Reagents | Principle | Test for | Positive Result | Negative Result | Biuret | CuSO4‚ NaOH | Complexation of Cu+2 with amide N atoms | Polypeptide bonds | Violet/purple solution | Blue color solution | Sakaguchi | 10% NaOH‚ 0.02% α-naphtol solution‚ 2% NaOBr | arginine condenses with α-naphtol and NaOH
Premium Acetic acid Iodine Ester
muffins and cakes a lighter‚ airier texture. When heated‚ baking soda decomposes in one of the following unbalanced equations. NaHCO3 (s) H2O (g) + CO2 (g) + Na2O (s) NaHCO3 (s) CO2 (g) + NaOH (s) NaHCO3 (s) H2O (g) + CO2 (g) + Na2CO3 (s) Develop a procedure to determine which reaction occurs. Be sure to include specific quantities‚ times‚ and equipment. Make sure you have a way to assess the precision on the experiment. The % yield of a reaction can be used to determine
Premium Chemical reaction Sodium bicarbonate Carbon dioxide
readily detected by an acid-base indicator or that can be followed electrically by use of a pH meter. Neutralization titrations are performed with standard solutions of strong acids or strong bases. A standard solution (or standard titrant) is a reagent of exactly known concentration. Standard solutions play a central role in all volumetric methods of analysis. The ideal standard solution for a volumetric method should - be sufficiently stable so that it will not be necessary to determine its
Free PH PH indicator Titration
a framework for evaluating different chemistries‚ and an ideal to strive for in new reaction chemistry (1‚2‚3). Green Chemistry Principle: Atom Economy Atom economy means maximizing the incorporation of material from the starting materials or reagents into the final product. It is essentially pollution prevention at the molecular level. For example‚ a chemist practicing atom economy would choose to synthesize a needed product by putting together basic building blocks‚ rather than by breaking down
Premium Chemistry Chemical reaction Stoichiometry
of one of the ions or anions combined with one of the reagents such as NaCl. It was found that it could be separated out after centrifuging and would result in a sample without the ions or anions if it precipitated. With the data from week one a method of adding the reagents in a certain order would result in the ability to separate all ions or anions out of a solution. Overall‚ knowing how the cations or anions reacted with certain reagents benefited greatly to determine a way to create a separation
Premium Chemistry Solubility Separation process
test tube rack (1) test tube holder (2) 100 mL beaker medium test tube (6) Materials cyclohexene toluene n-hexane conc. H2SO4 Br2/CCl4 or Br2/CH2Cl2 0.50 % KMnO4 10% NaOH 10% Na2CO3 unknowns hydrocarbons Discussion Hydrocarbons‚ compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes have only single
Premium Alkene Hydrocarbon Potassium permanganate
Chapter 3 Important Chemical Concepts: Expressing Quantities and Concetrations I. Important Units of Measurement A. SI Units (International System of Units) SI Base Units Physical Quantity Name of Unit Abbreviation Mass kilogram kg Length meter m Time second s Temperature kelvin K Amount of substance mole mol Electric Current ampere A Luminous Intensity candela cd Prefixes for Units giga- G 109 mega- M 106 kilo- k 103 deci-
Premium Mole Concentration Amount of substance
reactions and observations from the laboratory activity. Lesson 4.06: Stoichiometry Explain what the coefficients in a balanced equation represent and how they can be used in ratios. Use coefficients from a balanced equation as a mole ratio in dimensional analysis calculations. Solve a variety of stoichiometry calculations involving moles and mass. Use volume and density in stoichiometry calculations (honors). Lesson 4.07: Limiting Reactant Identify when a problem
Premium Chemical reaction Stoichiometry