Explain why the electron-rich C=C bond makes alkenes react with electrophiles, and write equations for the addition of water (with an acid catalyst), halogens and hydrogen halides to alkenes, including the bromine water test for unsaturation.
Tę umiejętność sprawdza 8 zadań wzorowanych na arkuszach IB z lat 2022–2025.
The structure of galantamine is shown below. (i) State the name of the functional group that contains the nitrogen atom. (ii) Outline the effect of this functional group on the pH of water in which galantamine is dissolved, giving the direction of the change…
But-2-ene and other alkenes serve as starting materials for a wide range of compounds. (i) Predict the product formed when but-2-ene reacts with bromine. (ii) Describe how this reaction proceeds at the mechanistic level, drawing curly arrows for each…
(i) State the type of reaction taking place, and identify the role played by HI. (ii) Outline why molecules such as HI are able to attack ethene.
Pent-2-ene undergoes a range of addition reactions. Which reagent and product are correctly matched? A. Reagent H2, product pent-1-ene B. Reagent Br2, product 2,3-dibromopentane C. Reagent H2O, product pentan-1-ol D. Reagent HBr,…
But-1-ene is converted into butan-2-ol in a single reaction. State the corresponding equation.
What is the product of the reaction between propene and bromine? A. 1,1-dibromopropane B. 2,2-dibromopropane C. 1,2-dibromopropane D. 1,3-dibromopropane
Two colourless liquids in unlabelled bottles are cyclohexane and cyclohexene. Describe a chemical test, and the expected observation with each liquid, that would show which bottle contains cyclohexene.
Bromine water is added to compound A. Describe the change observed.
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