Lesson 6C.1
6C.1 Alkene bonding and addition reactions Quiz: Pearson Edexcel Chemistry, Unit 6
20 questions
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Lesson 6C.1, Alkene bonding and addition reactions: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 6: Organic Chemistry I, written with Revision Ninja.
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The 20 questions
-
Which is the general formula of the alkenes?
- CnH2n-2
- CnH2n+2
- CnH2n
- CnH2n+1
-
Which two types of bond form a carbon-carbon double bond?
- Dative and covalent
- Sigma and pi
- Two sigma bonds
- Two pi bonds
-
Which compound is formed by the catalytic hydrogenation of ethene with a nickel catalyst?
- Ethanol
- Ethane
- Ethanal
- Ethyne
-
What effect does catalytic hydrogenation have on vegetable oils?
- Increases melting point
- Cleaves carbon chains
- Increases unsaturation
- Decreases melting point
-
Ethene reacts with bromine. Which product is formed?
- Ethyne dibromide, C2H2Br2
- 1,1-dibromoethane, CH3CHBr2
- Bromoethane, CH3CH2Br
- 1,2-dibromoethane, CH2BrCH2Br
-
Ethene reacts with hydrogen chloride to give a halogenoalkane. Which product is formed?
- Chloroethene, CH2=CHCl
- Ethanol, CH3CH2OH
- Chloroethane, CH3CH2Cl
- 1,2-dichloroethane, CH2ClCH2Cl
-
Ethene is passed with steam over an acid catalyst. Which product is formed?
- Ethanoic acid, CH3COOH
- Ethanol, CH3CH2OH
- Ethanal, CH3CHO
- Ethane-1,2-diol, HOCH2CH2OH
-
Ethene is oxidised by acidified potassium manganate(VII). Which product is formed?
- Ethanal, CH3CHO
- Ethanoic acid, CH3COOH
- Ethane-1,2-diol, HOCH2CH2OH
- Ethanol, CH3CH2OH
-
What mass of 1,2-dibromoethane (Mr = 188) is formed from 14.0 g of ethene (Mr = 28.0) with excess bromine?
- 28.0 g
- 47.0 g
- 94.0 g
- 188 g
-
Why are alkenes significantly more reactive than alkanes?
- Higher bond enthalpy
- High pi-bond density
- Stronger sigma bonds
- Lower electron density
-
Which type of bond fission produces ions rather than radicals?
- Heterolytic fission
- Homolytic fission
- Radical fission
- Catalytic fission
-
What is the atom economy of the hydrogenation of ethene to ethane, C2H4 + H2 -> C2H6?
- 50%
- 100%
- 93%
- 7%
-
What is the systematic name of the product from the hydrogen chloride addition to propene, using Markovnikov's rule?
- 2-chloropropane
- Chloroethene
- 1,2-dichloropropane
- 1-chloropropane
-
What type of reaction is the hydrogenation of an alkene?
- Substitution
- Elimination
- Oxidation
- Addition
-
What is the Mr of chloroethane, CH3CH2Cl? (Ar: C = 12.0, H = 1.0, Cl = 35.5)
- 82.5
- 28.0
- 50.5
- 64.5
-
Compared to a C=C sigma bond, a C=C pi bond is:
- Weaker
- Equal strength
- Stronger
- Non-reactive
-
Which compound is formed by adding steam to propene in the presence of an acid catalyst?
- Propan-1-ol
- Propanal
- Propan-2-ol
- Propanone
-
Which compound is produced by the addition of hydrogen to but-1-ene?
- Butan-1-ol
- Butanone
- But-2-ene
- Butane
-
What is the molecular formula of the alkene with five carbon atoms?
- C5H8
- C6H12
- C5H12
- C5H10
-
What is the empirical formula of ethene, C2H4?
- CH
- CH3
- CH2
- C2H
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