OCR a level chemistry organic chemistry Study guides, Class notes & Summaries

Alkene + hydrogen /nickel catalyst/423K= - correct answer alkane Alkene + bromine /room temperature= - correct answer dihaloalkane Alkene + HCl(g/aq) /room temperature= - correct answer haloalkane (mixed products) Alkene + H2O(g) /H3PO4= - correct answer alcohol (mixed products) Primary alcohol + 2[O] /excess K2Cr2O7/H2SO4/reflux= - correct answer carboxylic acid Primary alcohol + [O] /K2Cr2O7/H2SO4/distil= - correct answer aldehyde Secondary alcohol + [O] /K2Cr2O7/H2SO4/reflux...

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...

OCR GCE AS Level Chemistry A H032/01: Breadth in chemistry Mark Scheme for June 2022. (Electrostatic) attraction between oppositely charged OR + and – ions  1 AO1.1 ×1 Attraction is essential IGNORE references to metal and non-metal Mark SchemeJune 2022 20 (ii) Mg2+ shown alternately in FOUR circles  S 2– shown alternately in FOUR circles  2 AO1.2 ×2 ALLOW labels if seen outside circles provided it clear which circle the label applies to ALLOW 1 mark for Mg AND S s...

chemistry- stereoisomers definitions OCR A level Question and answers 100% solvedhomologous series a family of organic compounds with the same general formula and similar chemical properties. in the group, each member differs by the addition of CH2 and a gradual change in physical properties stereoisomer molecules with the same molecular and structural formula but a different spacial arrangement of atoms geometric isomer A type of stereoisomer that has a different arrangements a...

OCR A-Level Chemistry A Organic Synthesis Question 100% solvedAlkene + hydrogen /nickel catalyst/423K= alkane Alkene + bromine /room temperature= dihaloalkane Alkene + HCl(g/aq) /room temperature= haloalkane (mixed products) Alkene + H2O(g) /H3PO4= alcohol (mixed products) Primary alcohol + 2[O] /excess K2Cr2O7/H2SO4/reflux= carboxylic acid Primary alcohol + [O] /K2Cr2O7/H2SO4/distil= aldehyde Secondary alcohol + [O] /K2Cr2O7/H2SO4/reflux= ketone ...

Pag 12.1 Investigating Iron Tablets - Risk Assessment - Introduction - Results table

This resource includes exam questions from both Chemistry A and Chemistry B. It is not designed as a topic test but is instead intended as a document to support the teaching and learning of Module 1 – Development of practical skills in chemistry. 1. Ethanol is oxidised to ethanoic acid using acidified potassium dichromate(IV) solution. The reaction is heated under reflux using the equipment shown in the diagram below. What is the reason for heating under reflux? A. to ensure even heating B. to...

OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 6: Synthesis of an organic solid Practice Exam Questions and Mark Scheme 2020

Alkene + hydrogen /nickel catalyst/423K= - alkane Alkene + bromine /room temperature= - dihaloalkane Alkene + HCl(g/aq) /room temperature= - haloalkane (mixed products) Alkene + H2O(g) /H3PO4= - alcohol (mixed products) Primary alcohol + 2[O] /excess K2Cr2O7/H2SO4/reflux= - carboxylic acid Primary alcohol + [O] /K2Cr2O7/H2SO4/distil= - aldehyde Secondary alcohol + [O] /K2Cr2O7/H2SO4/reflux= - ketone Alcohol + H3PO4 or H2SO4/reflux= - alkene + H2O Alcohol + HBr /H2SO4/reflux= - haloalkane...

OCR A Level Chemistry A Chemistry B PAG 5 Synthesis of an organic liquid Exam Questions and Mark