Organic chemistry ocr - Study guides, Revision notes & Summaries

OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 5: Synthesis of an organic liquid Practice Exam Questions and Mark Scheme 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 prevent any substances escaping C. to boil the mixture at a higher temperature D. to allow efficient mixing Yo...

Comprehensive notes covering the whole of AS-level organic chemistry, written to include every specification point. Contains diagrams, equations, example answers, as well as step-by-step mechanisms and mark-scheme approved definitions. I made these during my A-levels, and I hope they can help you!

OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 5: Synthesis of an organic liquid Practice Exam Questions and Mark Scheme 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 prevent any substances escaping C. to boil the mixture at a higher temperature D. to allow efficient mixing Yo...

OCR A LEVEL CHEMISTRY A CHEMISTRY B SYNTHESIS OF AN ORGANIC LIQUID EXAM QUESTIONS AND CORRECT ANSWERKEY

Organic Synthesis & Analytical Techniques OCR A-Level Chemistry Greenhouse gases in the atmosphere ANSWER absorb infrared radiation Electromagnetic radiation from the sun ANSWER reaches the earth and is absorbed by the land and sea Some of the EMR that reaches the earth ANSWER is re-emitted as infrared Greenhouse gases include ANSWER carbon dioxide, water vapour and methane The greenhouse effect is when ANSWER greenhouse gases absorb the infrared radiation that is re-emitted from ...

OCR A level Chemistry Practical 100% CORRECT VERIFIED SOLUTIONS What does distillation do? separates liquids with different boiling points What does a separating funnel do? Separates water form organic liquids after distillation What does drying do? Remove traces of water Name 2 drying agents MgSo4 CaSo4 What does redistillation do? Used to separate 2 organic liquids with the same/ similar boiling points What is filtration? the process that separates a solid from the liquid Wh...

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...

OCR A level Chemistry Definitions Exam With 100% Correct Answers Activation Energy - Correct Answer The minimum energy required to start a reaction by breaking bonds in the reactants Addition Polymer - Correct Answer A very long molecular chain formed by repeated addition reactions of many unsaturated alkene molecules Addition Reaction - Correct Answer A reaction in which a reactant is added to an unsaturated molecule to make a saturated molecule Acid Dissociation Constant - Corre...