Ch14_WS3
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Cambridge International AS and A Level Chemistry Original material © Cambridge University Press 2011 1 Worksheet 14.3 Alkenes – addition reactions 1 This question is about the two isomers shown below. a i Give the molecular formula of both A and B. [1] ii Give the empirical formula of both A and B. [1] b Give the skeletal formula e of the two isomers formed when 1 mole o f A reacts with 2 moles of HBr. [2] c Give the skeletal formula of the isomer formed when 1 mole of A reacts with 1 mole of HBr. [1] d Give the skeletal formula e of the three isomers formed when 1 mole of B reacts with 2 moles of HBr. [3] e Give the skeletal formulae of the two isomers formed when 1 mole of B reacts with 1 mole of HBr. [2] f i Give the equation for the reaction of A with hydrogen. [2] ii What are the conditi ons required for this reaction? [2] 2 This q uestion concerns the compound C, with the skelet al fo rmula shown below. a i What is the approxi mate value of the bond angle marked x? [1] ii Draw the skeletal formula of the stereoisomer of C. [1] iii Give the molecular and empirical formula e for C. [2] b Give the struct ure of the polymer formed from C. [2] c Give the skeletal formulae o f the products from the reactio ns of C w ith the following reagents. i H 2 O [2] ii HBr [2] iii H 2 [1] iv Br 2 [1]
description
Worksheet 14.3
Transcript of Ch14_WS3
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CambridgeInternationalASandALevelChemistry OriginalmaterialCambridgeUniversityPress2011 1
Worksheet14.3
Alkenesadditionreactions
1 Thisquestionisaboutthetwoisomersshownbelow.
a i GivethemolecularformulaofbothAandB. [1]ii GivetheempiricalformulaofbothAandB. [1]
b Givetheskeletalformulaeofthetwoisomersformedwhen1moleofAreactswith2molesofHBr. [2]
c Givetheskeletalformulaoftheisomerformedwhen1moleofAreactswith1moleofHBr. [1]
d Givetheskeletalformulaeofthethreeisomersformedwhen1moleofBreactswith2molesofHBr. [3]
e Givetheskeletalformulaeofthetwoisomersformedwhen1moleofBreactswith1moleofHBr. [2]
f i GivetheequationforthereactionofAwithhydrogen. [2]ii Whataretheconditionsrequiredforthisreaction? [2]
2 Thisquestionconcernsthe compoundC,withtheskeletalformulashownbelow.
a i Whatistheapproximatevalueofthebondanglemarked x? [1]ii Drawtheskeletalformulaofthe stereoisomerofC. [1]iii GivethemolecularandempiricalformulaeforC. [2]
b Givethestructure ofthepolymerformedfromC. [2]c GivetheskeletalformulaeoftheproductsfromthereactionsofCwiththe
followingreagents.i H2O [2]ii HBr [2]iii H2 [1]iv Br2 [1]
