XXIX The addition of chlorine Cl, on an alkene leads to a derivative containing 56% of chlorine by mass, a) Determine the molecular formula of the alkene. b) Could you predict its structural formula knowing that its hydration in sulfuric medi- um leads to a sole alcohol (exempt of any isomer minority). c) Would the structural formula allow the characterization of the studied alkene? C=12; Cl=35,5; H=1

Chemistry: The Molecular Science
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Author:John W. Moore, Conrad L. Stanitski
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Chapter2: Chemical Compounds
Section2.9: Organic Molecular Compounds
Problem 2.11E
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a) Determine the percentage composition by mass of aspirine.
b) Find the molecular formula of aspirine assuming its molar mass equals to 180g.mol
XXIX The addition of chlorine Cl, on an alkene leads to a derivative containing 56% of chlorine by mass.
a) Determine the molecular formula of the alkene.
b) Could you predict its structural formula knowing that its hydration in sulfuric medi-
um leads to a sole alcohol (exempt of any isomer minority).
c) Would the structural formula allow the characterization of the studied alkene?
C=12; Cl=35,5; H=1
XXX An organic substance consisting of carbon, hydrogen and oxygen contains 64,86% of
carbon and 13,52% of oxygen. Find the simplest formula that could be attributed to this
substance.
Give the structural formula and the name of the compound, knowing that it derives from
the hydration of but - 2- ene.
XXXI 2-Methyl but - 2- ene is a liquid hydrocarbon with a density p = 600Kg.m; It is treat-
ed with a bromine solution in tetrachloromethane.
%3D
a) Write the net equation of the reaction and name the obtained product.
b) The bromine solution is assumed to contain 32g of this reactant in a volume of 200ml.
Determine the minimum volume of the solution to be added to 7cm'of the alkene so that
Transcribed Image Text:a) Determine the percentage composition by mass of aspirine. b) Find the molecular formula of aspirine assuming its molar mass equals to 180g.mol XXIX The addition of chlorine Cl, on an alkene leads to a derivative containing 56% of chlorine by mass. a) Determine the molecular formula of the alkene. b) Could you predict its structural formula knowing that its hydration in sulfuric medi- um leads to a sole alcohol (exempt of any isomer minority). c) Would the structural formula allow the characterization of the studied alkene? C=12; Cl=35,5; H=1 XXX An organic substance consisting of carbon, hydrogen and oxygen contains 64,86% of carbon and 13,52% of oxygen. Find the simplest formula that could be attributed to this substance. Give the structural formula and the name of the compound, knowing that it derives from the hydration of but - 2- ene. XXXI 2-Methyl but - 2- ene is a liquid hydrocarbon with a density p = 600Kg.m; It is treat- ed with a bromine solution in tetrachloromethane. %3D a) Write the net equation of the reaction and name the obtained product. b) The bromine solution is assumed to contain 32g of this reactant in a volume of 200ml. Determine the minimum volume of the solution to be added to 7cm'of the alkene so that
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