Addition to alkene - Study guides, Class notes & Summaries

IB Organic Chemistry HL and SL Latest Update 100% Correct Covalent When 2 atoms "share" electrons Empirical Formula The lowest whole # ratio of atoms in a compound Molecular Formula The actual number of atoms in a compound Homologous Series The series of hydrocarbons that follows the formula C(n)H(an+b) Hydrocarbon A compound composed entirely of hydrogen and carbon Alkanes A carbon chain that contain only single bonds Catenation Adding carbons to chain Isomer/Struct...

A LEVEL CHEMISTRY EXAM WITH COMPLETE SOLUTIONS   alkali - A type of base that dissolves in water forming hydroxide ions, OH- (aq) ions. alkanes - The homologous series with the general formula: CnH2n+2. alkyl group - An alkane with a hydrogen atom removed, e.g. CH3, C2H5; alkyl groups are often shown as 'R'. amount of substance - The quantity whose unit of the mole. Chemists use 'amount of substance' as a means of counting atoms. anhydrous - A substance tha...

1 MODULE 8 PORTAGE 219 ORGANIC CHEMISTRY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ large molecule made by repetitive linking of smaller units (monomers) Correct Answer: Polymer very large molecule composed of thousands of covalently bonded atoms (ex: polymer) Correct Answer: Macromolecule two ways polymers are made Correct Answer: 1. natural (in nature) 2. synthetic (in lab) natural polymers Correct Answer: rubber, carbs: starch & cellulose, proteins, nu...

Ocr a level chemistry paper 1 2023 QUESTIONS AND CORRECT VERIFIED ANSWERS// OCR A Level Chemistry latest update acid - CORRECT ANSW-A species that is a proton donor. activation energy - CORRECT ANSW-The minimum amount of kinetic energy that particles need to have in order to react when they collide addition polymer - CORRECT ANSW-A very long molecular chain formed by repeated addition reactions of many unsaturated alkene molecules (monomers). addition polymeris...

Cumulated Diene correct answers double bonds are adjacent Conjugated Diene correct answers double bonds separated by 1 single bond Isolated Diene correct answers double bonds separated by more than 1 single bond Heteroatoms correct answers may be involved in conjugated dienes atom that isn't a carbon atom Diene Formation correct answers elimination using a strong, bulky base t-BuOK Single Bonds in Conjugated Diene correct answers shorter than typical will freely rotate allows...

OCR CHEMISTRY A LEVEL WITH COMPLETE SOLUTIONS   Haloalkane to nitrile - ANSWER-nucleophilic substitution ethanolic NaCN or KCN heat Haloalkane to primary amine (also makes NH4X) - ANSWER-Nucleophilic substitution Excess ethanolic NH3 with no further substitution HEAT under PRESSURE acyl chloride/acid anhydride to SECONDARY amide - ANSWER-Nucleophilic substitution primary amine Acyl chloride/acid anhydride to PRIMARY amide - ANSWER-Nu...

IR Spectra correct answer: -Absorption of radiation causes vibrational excitation of functional groups *making it easy to ID functional groups* *0-5000cm-1* H NMR Spectra correct answer: *0-12ppm* C NMR Spectra correct answer: *0-200ppm* Mass Spec correct answer: -Used to measure the molecular weight (mass) of the compound. Alkyne Reactions correct answer: *1* Alkyne + H2/Pd &C = Alkene *2* Alkyne + H2/Lindlav Cat.= Cis Alkene *3* Alkyne + Li or Na/Liquid NH3= Trans Alkene ...

Addition - ANSWERA reaction involving an increase in the number of groups attached to the alkene and a decrease in the number Regiochemistry - ANSWERThe orientation of a chemical reaction on an unsymmetrical substrate. In additions to alkenes, the regiochemistry of the addition involves which part of the reagent adds to which end of an unsymmetrical alkene. Regioselective reaction - ANSWERA reaction in which one direction of bond making or bond breaking occurs preferentially over all other...

Basicity rules correct answers -strong base: unstable/reactive (ED groups) -weak base: stable (EW groups/more EN/bigger) Chair conformation correct answers -more stable equitorial (slanted) -pointing up/pointing down=cis if both up -elimination: trans and diaxial Newman projection correct answers -gauche: substituent groups adjacent to eachother -grab middle and turn to put in plane Enantiomers correct answers -not superimposable mirror images -same besides stereochemistry Diast...

Thermal Cracking - correct answer - High temperatures (1000C) - High pressure (up to 70atm) - Produces ALKENES - E.g. ethene --> polyethene Catalytic Cracking - correct answer - Zeolite catalyst - Slight pressure - High temperature (450C) - Produces AROMATICS Reformation - correct answer Alkanes --> cycloalkanes/ aromatic hydrocarbons - Straight chain alkanes are a lot more likely to...