Electrophiles - Study guides, Class notes & Summaries

OCR A LEVEL ORGANIC CHEMISTRY YEAR 12 WITH VERIFIED QUESTIONS AND ANSWERS What is the melting and boiling points of alkanes like? - ANSWER--as chain length increases so does the strength of the intermolecular forces as there is greater surface area for contact between molecules and hence stronger london forces and therefore the melting/boiling points are highr for longer chain. What is a structura/chain isomer? - ANSWER--Same molecular formula but a different structural formula Wh...

Acidity Constant (Ka) - correct answer (Section 2-8): A measure of acid strength. For any acid HA, the acidity constant is given by the expression Brønsted-Lowry Acid - correct answer (Section 2-7): A substance that donates a hydrogen ion (proton; H+) to a base. Brønsted-Lowry Base - correct answer (Section 2-7): A substance that accepts H+ from an acid. Conjugate Acid - corr...

A level chemistry paper 2 questions and answers latest top score. Silver nitrate+ nitric acid + chloride ions - ANS.White precipitate Silver nitrate+ nitric acid + bromide ions - ANS.Cream precipitate Silver nitrate+ nitric acid + iodide ions - ANS.Yellow precipitate Substances that decolorise bromine water - ANS.Alkenes Electrophiles - ANS.Electron pair acceptors, attracted to electrons e.g H+ NaF and NaCl - ANS.Produces misty fumes wi...

Silver nitrate+ nitric acid + chloride ions - Ans .White precipitate Silver nitrate+ nitric acid + bromide ions - Ans .Cream precipitate Silver nitrate+ nitric acid + iodide ions - Ans .Yellow precipitate Substances that decolorise bromine water - Ans .Alkenes Electrophiles - Ans .Electron pair acceptors, attracted to electrons e.g H+ NaF and NaCl - Ans .Produces misty fumes with conc sulphuric acid NaBr - Ans .Produces misty and orange/brown fumes with conc sulphuric acid NaI - A...

What are alkenes? - correct answer Unsaturated hydrocarbons, due to C=C double bond What is the general formula for an alkene? - correct answer CnH2n Why is there no rotation around the C=C double bond? - correct answer Due to the pi orbital above and below the bond, holding it in place. Are they more or less reactive than alkanes? - correct answer ...

OCR A LEVEL ORGANIC CHEMISTRY YEAR 12 WITH VERIFIED QUESTIONS AND ANSWERS What is the melting and boiling points of alkanes like? - ANSWER--as chain length increases so does the strength of the intermolecular forces as there is greater surface area for contact between molecules and hence stronger london forces and therefore the melting/boiling points are highr for longer chain. What is a structura/chain isomer? - ANSWER--Same molecular formula but a different structural formula Wh...

Chem 210 Exam II Questions and Correct Answers, Complete Solution 2024. electrophiles electron seeking reagents that have room to accept a electron pair nucleophiles reagents seeking a nucleus to which to donate a pair of electrons proton transfer or protonation reaction the transfer of a proton from one base to another transition state lying between the products and reactants free energy of activation (delta G double dagger) the height of the barrier, the energy that the reactants a...

Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution. what face of the pi bond can EAR occur from? either face how many products do EARs on an alkene form? 4 stereoisomeric products Brainpower Read More in a substitution rxn, what does H-O act as? nucleophile and replaces LG in an elimination rxn, what does H-O acts as? base and abstracts BH atom what is a requirement for elimination rxns? beta hydrogen what is a requirement for substitution rxns? leaving group ...

NRF 2 Exam Questions with All Correct A Nrf2 is responsible for... - Answer-Phase 2 drug metabolism (drug detoxification) How does Nrf2 become transcriptionally active? - Answer-Heterodimerization with transcription factor Maf Nrf2 binds to to mediate gene transcription - Answer-Antioxidant response elements (ARE) Nrf2 is key in... - Answer-Redox homeostasis Nrf2 upregulates... - Answer-Enzymes and proteins involved in redox homeostasis by upregulating gene expression Nrf2 preve...

Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution. what face of the pi bond can EAR occur from? either face how many products do EARs on an alkene form? 4 stereoisomeric products Brainpower Read More in a substitution rxn, what does H-O act as? nucleophile and replaces LG in an elimination rxn, what does H-O acts as? base and abstracts BH atom what is a requirement for elimination rxns? beta hydrogen what is a requirement for substitution rxns? leaving group ...