formation of a complex ion FeSCN2+. This was accomplished using a colorimeter to measure absorbance of some known concentration solutions in order to generate the calibration curve. The equation of the graph was used to compute the equilibrium concentrations of the reactants and products‚ needed to calculate the equilibrium constant for the reaction. I. Introduction: The purpose of the experiment is to determine the equilibrium constant for the formation of a complex ion iron (III) thiocyanate
Premium Chemical equilibrium
beaker. Mix the contents well. Transfer the contents of the beaker to a 250 ml volumetric flask and make up the volume to the graduation mark‚ observing all of the usual procedures. The addition of sulphuric acid is vital as it prevents the Fe 2 ions from reacting with Prepare the potassium permanganate solution. Weigh out an approximate amount of KMnO 4 ‚ in a beaker‚ enough to make an approximately 0.02 M solution. Dissolve in dilute sulphuric acid‚ transfer and make up the solution in the
Free Titration
due to their loosely packed metallic lattices. 6. Alkali metals‚ except lithium‚ show photoelectric effect. Due to small size and high ionization enthalpy‚ the electrons of lithium cannot be emitted. 7. Alkali metals do not form dipositive ions because of their very high second ionization enthalpies. 8. All alkali metals are paramagnetic but their salts are diamagnetic. 9. Alkali metals impart characteristic colors to the flame‚ i.e.‚ lithium imparts crimson red‚ sodium imparts golden
Free Periodic table
Department of Chemistry‚ Grinnell College‚ Grinnell‚ Iowa 50112‚ United States S Supporting Information * ABSTRACT: A simple organic chemistry experiment is described that investigates the kinetics of the reaction between 1-bromobutane (BuBr) and iodide (I−) as followed by observing the disappearance of BuBr and the appearance of 1-iodobutane (BuI) using 1H NMR spectroscopy. In small groups of three to four‚ students acquire data to examine the concentrationdependence of both the organic substrate
Premium Chemical reaction Chemistry
Kassidy Caviness- Thames Lab Partner: Dena Jackson Reaction lab “I certify that this lab report is my own work‚ except for properly referenced and cited information. I have adhered to all guidelines published in the student handbook on Academic Integrity‚ as well as all guidelines published for this class in the Syllabus and Academic Integrity Handouts.” Purpose- The purpose of this lab was to display to us a variety of different reactions using an eclectic of things in the chemistry lab: including
Premium Chemistry Chemical reaction Experiment
CHEM 121L General Chemistry Laboratory Revision 2.1 The Determination of Oxalate Ion in Ferric Oxalate Trihydrate using Titrimetry Learn how to perform a quantitative chemical analysis. Learn how to perform a titration. Learn about Oxidation-Reduction reactions. In this laboratory exercise‚ we will determine the Percentage Oxalate Ion (C2O42-) in our Potassium Ferric Oxalate Trihydrate (K3[Fe(C2O4)3]•3H2O) sample using a technique called Titration; a type of Volumetric Analysis. This will
Free Titration
Alkali Metals Introduction Alkali metals refer to six elements belonging to the Group IA of the long form of the Modern Periodic Table‚ viz. Lithium (Li)‚ Sodium (Na)‚ Potassium (K)‚ Rubidium (Rb)‚ Cesium (Cs) and Francium (Fr). Fr is a radioactive element. These elements are called so because they form strongly alkaline oxides and hydroxides. Electronic Configuration of Alkali Metals Each of the alkali metals has one electron in their outermost (valence) shell‚ which is just outside an inert
Premium Lithium Potassium Sodium
compounds of life) while all other compounds are called inorganic compounds. Classification of Compounds: A. Binary Compounds 1. Metal and Non-metal Inorganic compounds composed of just two elements‚ metal cations (positive ions) and non-metal anions (negative ions). These are referred to as metal-nonmetal binary compounds. There are two types of metals‚ some metals form cations with only one charge (e.g.Na+‚ K+) while other cations form
Free Periodic table Atom Chemistry
to All Students of BITS‚ who are doing their Higher Degree Dissertation Projects in the current semester Dissert at ion Proj ect s in t his sem est er culm inat e in t o a very im port ant and final st age of your educat ional process of BI TS. This leads t o subm ission of a professional report of a high qualit y st andard‚ as required of t he BI TS Dissert at ion. A Dissert at ion report is of a higher st andard in it ’s approach‚ wider in scope and deeper in t he levels of underst anding t han
Premium
IODINE TEST FOR STARCH The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black color. The colour can be detected visually with concentrations of iodine as low as 0.00002M at 20°C. However the intensity of the colour decreases with increasing temperature and with the presence of water-miscible‚ organic solvents such as ethanol. Also the test cannot be done at very low
Premium Fructose Glucose Sucrose