1. But-2-ene reacts with acidified potassium manganate(VII) at room temperature. The
organic product of this reaction is
A. butane-1,2-diol.
B. butane-1,3-diol.
C. butane-1,4-diol.
D. butane-2,3-diol.
2. A sample of 50cm3 of ethanol gas is burned completely in 200cm3 of oxygen.
C2H5OH(g) + 3O2(g) → 2CO2(g) + 3H2O(g)
All volumes are measured at a temperature of 400K and 1atm pressure.
What is the total volume of gas when the reaction is complete?
A. 150cm3
B. 200cm3
C. 250cm3
D. 300cm3
3. Which is a tertiary alcohol?
A. 2-methylbutan-2-ol
B. 2-methylbutan-1-ol
C. pentan-2-ol
D. pentan-3-ol
4. Excess ammonia in ethanol reacts with 1-bromobutane at high pressure. Which
products could be formed in this reaction?
A. C4H9NH2 and NH4Br
B. C4H9NH2 and C4H10
C. C4H10 and HBr
D. C4H8 , NH4Br and HBr
5. Which of these substances causes the greatest amount of anthropogenic global
warming?
A. Carbon dioxide
B. Methane
C. Dinitrogen monoxide
D. Dichlorodifluoromethane
6. In which pair do both substances deplete the ozone layer?
A. Water vapour and carbon dioxide
B. Dichlorodifluoromethane and nitrogen monoxide
C. Dichlorodifluoromethane and carbon dioxide
D. Water vapour and nitrogen monoxide
7. A polymer can be represented by this repeat unit
C2H5 H
|
|
C
C
|
|
CH3 CH3
What is the name of the monomer that can be used to form this polymer
A.2-ethylbut-2-ene
B. 2,3-dimethylbut-1-ene
C. 2-ethylpent-2-ene
D. 3-methylpent-2-ene
8. A compound contains 31.25% Ca, 18.75% C and 50.00% O. Its empirical formula
is
A. CaC2O4
B. Ca2CO3
C. Ca2CO2
D. CaCO3
9. Which reagent reacts with but-2-ene to form the compound with the formula
shown?
OH
OH
A. Water
B. Sodium hydroxide
C. Hydrogen peroxide
D. Acidified potassium manganate(VII)
10. How many different compounds can be represented by the formula C4H8?
A. 2
B. 3
C. 4
D. 5
11. Which is always true for an electrophile?
A. It accepts a pair of electrons to form a covalent bond.
B. It donates a pair of electrons to form a covalent bond.
C. It has a negative charge.
D. It has a positive charge.
12. What is the IUPAC name of (CH3)2-C=CH-CH-(CH3)2
13. One component of petrol is decane, C10H22.
(a) Decane reacts with chlorine in the presence of ultraviolet light to form a mixture of
products.
(i) Complete the equation for the initiation step, including appropriate curly arrows.
Cl - Cl
(ii) Write equations, using molecular formulae, for two propagation steps.
(iii) Write equations, using molecular formulae, for two termination steps, other than
the one in which chlorine forms.
(b) (i) The structure of Octane can be changed by the process called reforming. Name
the compound shown, which can be produced in this process.
(ii) Write an equation using skeletal formula, decane is reformed into Ethylbenzene.
(c) Write an equation, using molecular formulae, for the incomplete combustion
reaction in which Octane reacts to form carbon monoxide and one other product.
State symbols are not required.
(d) Octane can be cracked to form a mixture of alkane, and two different alkenes
which have different molecular formulae.
(i) Write an equation for this reaction, using molecular formulae. State symbols are
not required.
(ii) Explain why geometric isomerism can occur in alkenes and why alkenes produced
by this cracking reaction may not have geometric isomers.
(iii) Draw the structure of the trans, (E), isomer of an alkene produced by the cracking
reaction in.
14. What type of reaction shown each of the following?
a) CH3CH2Br + KOH  KBr + CH3CH2OH
b) CH3CH2CH2OH + 2 [O]  CH3CH2COOH + H2O
c) CH3CHO + [H]  CH3CH2OH
d) CH3CHO + HCN  CH3CH2(OH) CN
e) CH2=CHCH3 + HBr  CH3CH(Br)CH3 + BrCH2-CH2-CH3
15. (i) Draw a diagram of the hemolytic fission of C to C bond in C2H6.
(ii) Draw a diagram of the heterolytic fission of CH3CH2Cl
(iii) Explain why is the heterolytic fission occurred only in (ii) not in (i).