stirred until dissolved in 250cm3 of water * 25cm3 of this solution was placed into a conical flask and 3 drops of phenolphthalein indicator were added * A burette was filled with 0.2±0.02moldm-3 HCl * The HCl was titrated against the Na2CO3 and the data recorded in a table * The same procedure was repeated but this time using CH3COOH instead of HCl * The % of ethanoic acid was determined by titrating the standardized NaOH with it * Given that the % of ethanoic acid in this
Premium Titration Base Erlenmeyer flask
Chemical Reactions Lab Report Introduction: Chemical reactions is a process that involves rearrangement of the molecular or ionic structure of a substance. There are different types of reaction such synthesis‚ decomposition‚ single replacement‚ double replacement‚ and combustion. Synthesis is where two or more reactants combine to create a product. For Decomposition‚ it is the opposite where a product breaks down into reactants. In Single Replacement‚ reactants switches an element with another element
Premium Chemical reaction
Valenzuela City Science High School A. Marcelo St.‚ Dalandanan‚ Valenzuela City The Use of Coconut Shells (Cocos Nucifera mesocarp) As Green Activated Carbon Fiber For Muffler Air Filter Group Members: De Leon‚ Glenn Patrick C. Enmil Jr.‚ Rolando Manuel P. Santos-Diaz‚ Zoe Marie C. Suyat‚ Pauline Jirah A. Submitted to: Mr. Albert Tolentino Date Submitted: Aug. 10‚ 2011 Chapter 1: Introduction Statement of the Problem A. General problem: 1. How could we use
Premium Management Education High school
Introduction In an E1 reaction‚ where E stands for elimination and 1 stands for unimolecular. The breaking of the C-LV bond is completed before any reaction occurs between the base to lose a hydrogen and form the carbon-carbon double bond [1]. When the more substituted alkene is the dominant product‚ the reaction follows Zaitsev’s rule. Zaitsev’s rule states that the major product of a β-elimination reaction is the most stable alkene [1].Acid-Catalyzed Dehydration is the elimination of a
Premium Chromatography Gas chromatography
4. You perform each extraction twice‚ first with 1 mL and second with 0.15 mL. Why is the second extraction necessary? 5. What is the purpose of washing an ether solution with saturated NaCl solution? 6. What is the purpose of using CaCl2 pellets? (More questions next page!) 7. a) If your carboxylic acid is benzoic acid‚ how many moles of benzoic acid are present in your sample? b) How many moles of sodium
Premium Acetic acid Carboxylic acid Acid
INTRODUCTION: Site directed mutagenesis is molecular biology technique that is used to make specific‚ intentional and precise changes to the DNA sequence of a gene or any gene products. It is also used to determine the structure and biological activity of DNA‚ RNA and protein molecules. It is also called as site-specific mutagenesis or oligonucleotide-directed mutagenesis. This method has also found use in understanding important genetic process like DNA conformational analysis and also functioning
Premium DNA
This paper is an analysis conducted on Nucleic Acids through a variety of tests specifically‚ Dische‚ Murexide‚ Wheeler-Johnson and Phosphate Tests in order to exemplify structural features of nucleic acids as well as identify the principle involved in each chemical test. Different procedures and different test compounds were applied‚ and results were noted as for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide
Free DNA RNA
SNC2D0 Exam Review BIOLOGY: Cells‚ Tissues‚ Organs and Organ Systems 1. Compare and contrast the following terms: a) Endoplasmic reticulum and golgi apparatus b) Mitochondria and nucleus c) Cell wall and cell membrane d) Cell cycle and mitosis e) Cell cycle and cancer f) Tissue and organ system g) Digestive system‚ circulatory system‚ and respiratory system h) Root system and shoot system i) Phloem and xylem vessel 2. On a separate piece of paper‚ draw a labeled diagram of an animal
Premium Total internal reflection Carbon dioxide Refraction
Aseel Muqbel 15/2/2015 11th D Flame Test Intro: The flame test is a procedure used by chemists to identify the presence of specified metal ions‚ based on the color the flame that appears along with it when it ’s heated. Our flame test was in lab class‚ where the main aim was to tested different solid metals in the flame in order to observe the wide variety of colors those chemicals also sometimes compounds (by mixing them) they produced‚ the second one was to identify unknown metals based
Premium Potassium Sodium chloride Metal
the following chemical symbols and formulae represent. Symbol or formulae a OH1- b Polyatomic ion (hydroxide). One atom of oxygen bonded to one atom of hydrogen‚ with an overall charge of –1. 2 marks for each correct answer 3 CaCl2 d / 6 CO2 c Description Al(NO3)3 TOTAL / 30 16 Quick Science Tests – Chemistry 2 © Michael Profitt and Blake Education 2010 zthese lyrics show that acting a different way to get boys to like you is stupid and wearing
Premium Chemistry Brassiere Atom