H nmr Samenvattingen, Aantekeningen en Examens

OCR AS LEVEL CHEMISTRY A H432/02 SYNTHESIS AND ANALYTICAL TECHNIQUES GENUINE 2024 EXAM COMPLETE EXAM WITH CORRECT WELL DEFINED ANSWERS INNIT A+ ASSURED CHECK THE LAST PAGE FOR ANSWERS 1 What is the name of the compound below? H3C C CH2CH3 C H Br A E-3-bromopent-2-ene B E-3-bromopent-3-ene C Z-3-bromopent-2-ene D Z-3-bromopent-3-ene Your answer [1] 2 Which statement about bonds is correct? A The C=C bond in ethene is more polar than the C−C bond in etha...

CHEM 14C Winter 12 Final Exam Part B Solutions 1. HO O O 2. Influence #1: Resonance causes some or the entire molecule to be planar. Influence #2: Resonance increases stability. Influence #3: Resonance causes electron delocalization. 3. Coplanar The carboxylic acid and ring B have this geometry because it allows for conjugation between the C=O and the B ring aromatic electron cloud. H 4. 5. Ten 6. A, B, and C 7. Of the carbon stereocent...

What are saturated vs unsaturated fatty acids? correct answer: •Saturated fatty acids have no C=C bonds (their C's have max # of Hs) •Unsaturated fatty acids have one or more C=C bonds (monosaturated = one double bond) (polyunsaturated = more than 1 double bond) •Z (cis) are naturally occurring double bonds; E (trans) are artificial double bonds How is biodiesel produced commercially? Which method is predominant? correct answer: ***1) Base catalyzed transesterification of oil with ...

biodiesel correct answer: comprised of long-chain FAMES(fatty acid methyl esters) three methods for production of Biodiesel correct answer: -catalyzed transesterification 2. acid-catalyzed transesterification 3. saponification followed by acid-catalyzed transesterification method used in experiment correct answer: base-catalyzed transesterification a-linoleic acid correct answer: 17 carbon chain three double bonds linoleic acid correct answer: 17 carbon chain two double bonds...

Unsaturated fatty acids ______________. correct answer: have one or more C=C saturated fatty acids _________________. correct answer: do not have ANY C=C bonds, only C-C. what ways is biodiesel produced commercially? correct answer: * base catalyzed transesterification of the oil with methanol (what we used) * acid catalyzed esterification of the oil with methanol *saponification of the oil to yield free fatty acids, then acid catalyzed esterification FAME stands for: correct answe...

Determine the limiting reagent and the excess reagent for the biodiesel lab Excess reagent _____________ limiting reagent _____________________ correct answer: methanol, triglyceride Complete the statements below by matching the following saturated fatty acids have ______ __________ bonds unsaturated fatty acids have _____ ____________ bonds correct answer: no C=C, one C=C The addition of water to sodium methoxide produces ___________ _______________ and _________________ corre...

MRI Study guide Questions and Answers 2023 MRI visible radiation reflects from the body 1. Visible light reflects off an object 2. reflected light detected by a that is sensitive to that kind of radiation - a RETINA MRI photograph is madeby 1. with reflex/refraction 2. electromagnetic radiation and receptors 3. visible lights extends from approximately 400 nm (blue) to 700 nm (red) x ray image radiation is transmitted through the body 1. electromagnetic radiation shines on a...

Exam (elaborations) TEST BANK FOR Organic Structures from 2D NMR Spectra By L. D. Field, H. L. Li and A. M. Magill (Instructors Guide and Solutions Manual) Instructor’s Guide and Solutions Manual to Organic Structures from 2D NMR Spectra L. D. Field, H. L. Li and A. M. Magill School of Chemistry, University of New South Wales, Australia CONTENTS Preface ix Solutions Summary 1 Problem 1 (1-iodopropane) 7 Problem 2 (2-butanone) 11 Problem 3 (2-hexanone) 15 Problem 4 (ethyl propionat...

AQA A-LEVEL CHEMISTRY PAPER 2 QUESTION PAPER JUNE 2020 A-level CHEMISTRY Paper 2 Organic and Physical Chemistry Monday 8 June 2020 Afternoon Time allowed: 2 hours Materials For this paper you must have: • the Periodic Table/Data Booklet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at...

A-level CHEMISTRY 7405 Data Booklet This Data Booklet is provided with AQA A-level Chemistry question papers. IB/M/Insert to A-level Chemistry/E8 7405 3 Data Sheet Table A Infrared absorption data Bond Wavenumber Table B 1H NMR chemical shift data Type of proton /ppm Table C 13C NMR chemical shi...