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6. Chlorine undergoes ___(a)___ fission under __(b)__ to begin a ______(c)______ reaction
- (a)Homolytic (b) Sunlight and warm conditions (c) Nucleophilic substitution
- (a) Homolytic (b) UV light (c) Free radical substitution
- (a) Heterolytic (b)UV light (c) Free radical substitution
- (a) Heterolytic (b) Acid conditions (c) Electrophlic substitution
7. Why is 2-Bromopropane the major product of the reaction of propene and HBr?
- It is not, the products are equally likely as propene is symmetrical
- There is less steric hinderance for the reaction compared to 1-Bromopropane
- Because the intermediary carbocation is more stable (the charge is spread over more atoms)
- The H will attack where there are fewer H's already
8. What is a functional group?
- The -COOH in an alcohol , for example
- A group of atoms or an atom which give a compound distinctive properties
- The columns of the periodic table
- A family of molecules that all have a homologous series attatched
9. Which of these halogenalkanes would form a precipitate first when aqeous silver nitrate is added?
- 2-iodo-3,3-dimethylheptane
- 1-chlorobutane
- 2-iodo-2-methylpropane
- 2-fluroethane
10. What is the product of a halogenalkane reacting with KOH under ethanolic conditions?
- A salt and water
- An alkene, water and KX (elimination)
- An alcohol with a halogen group (addition)
- An alcohol and KX (subsitution)
11. The C=C double bond is....
- ....made of p-orbitals that overlap sideways to form a sigma bond, split in electron density above and below the nuclei plane
- ... not quite twice as strong as the C-C bond, due to the presence of the pi bond
- ...made of 2 pi bonds, overlapping end-on
- ... more than twice as strong as the C-C bond due to the electron-dense sigma bond
12. Why does But-1-ene not exhibit steroisomerism ?
- It has the same group (two H's) attatched to one carbon in the C=C bond
- Because it has different groups attached to the central C=C
- It exhibits E/Z but not Cis/Trans due to the varying groups attached to the C=Cs
- Because it is a functional group isomer of But-2-ene
13. What are some of the issues with bioethanol and biodisel?
- It is not as close to carbon neutral as some fossil fuels such as coal
- Engines will have to be drastically remodeled to run it
- It uses large areas of land and has substantial costs in processing and manufacture
- It is non renewable
14. Is C2F4 (a) An organic compound? (b) A Hydrocarbon? (c) Saturated?
- (a) Yes. It contains mainly carbon (b) No, it contains flourine (c) No, It has a double bond
- (a) No, It contains flourine (b) No, there is no hydrogen (c) Yes, it has the full number atoms bonded to each C
- (a) Yes because it has Cs (b) Yes because it is organic (c) No because the carbons can have 2 more atoms bonded
- (a) No, it has a halogen and no hydrogen (b) No, it doesn't contain H and Cs only (c) Yes, carbon can only make 4 bonds
15. What reagent is used to convert a primary alcohol to a chloroalkane?
- Cl2
- KCl and H2SO4
- PCl5
- HCl
16. Momomers are...
- The alkenes that form a polymer
- The singular repeat units that form a polymer (after the double bond has been broken)
- Alkenes with only one C=C double bond
- Alkanes that form polymers by addition reactions
17. What is the catalyst for the hydration of ethene into ethanol?
- Iron
- Phosphoric acid
- Nickel
- Potassium (VIII) manganate
18. Which formulae type is this: "A zig-zag line where every bend and end is a carbon atom"
- Skeletal
- Displayed
- Structural
- Emprical