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WorksheetsTopic 14(b) Organic Chemistry
Total questions: 44
Worksheet time: 22mins
Which bond in a molecule of ethanoic acid is brooken whenit reacts with magnesium?
the C- H bond
the C-C bond
the O-H bond
the C=O bond
When 20 cm3 of gaseous alkane burns in an excess of oxygen, 60 cm3 of carbon dioxide are formed. Both volumes are measured at r.t.p.
What is formula of the alkene?
C3H6
C3H8
C6H12
C6H14
Which of the following describes the ways in which isomers are identical and different?
Which set contains all the possible combustion products of methane, CH4?
carbon, carbon dioxide, carbon monoxide and water
carbon, carbon monoxide and hydrogen
carbon dioxide, carbon monoxide, hydrogen and water
carbon monoxide and water
Which compound can be obtained by the oxidation of propanol,CH3CH2CH2OH?
CH3CH2CH2CO2H
CH3CH2CO2H
CH3CH2OH
HCO2CH2CH3
Which acid would combine with ethanol to give the ester C2H5CO2C2H5?
butanoic acid
ethanoic acid
methanoic acid
propanoic acid
The diagram represents the process of fractional distillation of petroleum. At which outlet is bitumen obtained?
A
B
C
D
The diagram shows the fractional distillation of petroleum.
Which statements about fraction X and Y are correct?
Which change takes place as propene is converted to poly(propene)?
a change in empirical formula
a condensation polymerisation reaction
the loss of electrons as new bonds form
unsaturated molecules produce a product that is saturated
Which comparison of the properties of pentane, C5H12, and propane is true?
Propane has a higher melting point
Propane has a lower boiling point
Propane is less flammable
Propane is more viscious
Which statement about a polyunsaturated vegetable oil is correct?
It has double bonds between carbon and hydrogen atoms.
It reacts with hydrogen to form a solid compound.
It reacts with steam to form margarine.
It turns aquaeous bromine from colourless to brown.
In which chemical reaction does the named product formed have a lower molecular mass than the reactant?
the formation of an ester from ethanol.
the formation of ethanoic acid from ethanol.
the formation of ethanol from ethene.
the formation of ethanol from gluscose.
When ethanol reacts with ethanoic acid, the ester ethyl ethanoate is formed.
C2H5OH + CH3CO2H → CH3CO2C2H5+H2O
What is the formula of the ester formed when methanol reacts with butanoic acid (C3H7CO2H)?
C2H2CO2C2H5
C3H7CO2C2H5
CH3CO2C3H7
C3H7CO2CH3
A liquid reacts with each of sodium carbonate, potassium hydroxide and ethanol.
What is the liquid?
aquaeous ammonia
ethanoic acid
ethyl ethanoate
hydrochloric acid
A polymer X was hydrolysed and the two products were
What can be deduced about X?
it was a condensation polymer.
It was starch.
It was made by addition polymerisation.
It was Terylene.
A 10 cm3 sample of gaseous hydrocarbon is completely burnt in oxygen. The total volume of the products is 70 cm3.
Which equation represents the combustion of the hydrocarbon?
Octane is an alkane preset in petrol.
What are the products when octane is completely burned in air?
carbon dioxide and hydrogen
carbon dioxide and water
carbon monoxide and water
carbon monoxide, carbon dioxide, and water
Which statement about the compound shown below is correct?
It does not react with ammonia
It does not react with sodium carbonate.
It is ethanoic acid.
It is formed by oxidation of propanol.
The diagram shows the of a polymer, X.
Which reactant does not react with the monomer of the polymer, X?
bromine
hydrogen
sodium
steam
The structures of four organic compounds are shown.
Which compounds decolourise bromine water?
1 and 2
1, 2 and 4
2 and 4
3 and 4
Nylon, poly(ethene) and Terylene are three different polymers.
Which row shows the type of each polymer?
A hydrocarbon Q, on heating with a catalyst, forms a solid compound R.
Both Q and R have the same empirical formula.
What type of reaction is this?
addition polymerisation
condensation polymerisation
hydrogenetion
substitution
Which ester contains five carbon atoms in one molecule of the ester?
butyl propanoate
ethyl ethanoate
ethyl propanoate
propyl methanoate
'Cracking' of hydrocarbons breaks them into smaller molecules.
Which example of 'cracking' would produce the largest volume of products from one mole of hydrocarbon? Assume all that measurements are made at the same temperature and pressure.
What is the minimum number of moles of oxygen molecules required for the complete combustion of one mole of propanol?
3.0
4.5
5.0
8.0
When crude oil is fractionally distille, which compounds leave from the top of the fractionating column?
the compounds that are the least flammable
the compounds that are the most viscous
the compounds with the highest relative molecular mass
the compounds with the lowest boiling points
The reaction between a carboxylic acid, CₓHᵧCO2H, and an alcohol, CnH2+1OH, produces an ester.
How many hydrogen atoms does one molecule of the ester contain?
y + 2n
y + 2n +1
y + 2n +2
y + 2n +3
Nylon (a polyamide) and Terylene (a polyester) are both man-made fibres.
Which type of reaction is used to produce both of these polymers?
addition
condensation
fermentation
hydrolysis
What is the general formula of the homologous series or carboxylic acids?
CHO
CnH2nO
CnHnOn
CnH2nO2
L has the formula HOOC(CH2)4COOH and M has the formula H2N(CH2)6NH2.
When L is reacted with M, a macromolecule is formed.
Which statement about this macromolecule is correct?
Double bonds in the monomers are broken during its formation.
It is an addition polymer.
It is a polyamide.
It is a polyester.
When crude oil is distilled, several products are obtained.
What is the correct order of their boiling points?
Poly(carbonates) are synthetic polymers. Their structure can be as shown.
Which of the following has a type of linkage similar to that of a poly(carbonate)?
a polyamide
a polyester
poly(propene)
starch
Compound X can be oxidised to compound Y.
What are the names of X and Y?
The structure of a chloroethene molecule is shown.
Which row correctly describes the properties of chloroethene?
The diagram shows the structures of three of three hydrocarbons.
Which statement is correct for all three compounds?
They are isomers of each other.
They have the same general formula.
They have the same physical properties.
They react with aqueous bromine.
A carboxylic acid has the formula C2H4O2. What type of formula is this?
empirical formula
general formula
molecular formula
structural formula
Two alkane molecules are isomers.'
Which properties will be the same for both molecules?
I. empirical
II. general formula
III. molecular formula
IV. structural formula
I, II and III only
I, II, III and IV
II only
II and III only
An organic compound Z reacts with both sodium hydroxide and sodium carbonate.
What could the structure of Z be?
A gaseous mixture of ethene, oxygen and sulfur dioxide is passed through the apparatus shown. Only one of the gases is collected.
What is a property of the gas collected?
burns with a flow flame
relights a glowing splint
turns limewater cloudy
turns potassium dichromate(VI) solution green
A margarine is described as 'high in polyunsaturates'.
What does this type of margarine contain?
Long chain alkane molecules
many alkene molecules joined by addition polymerisation
molecules containing may C=C bonds
Which structure shows a compound that reacts with ethanol to give a sweet-smelling liquid?
Methane, CH4, the first member of the alkane homologous series, has a boiling point of -161⁰C .
Which molecular formula and boiling point could be correct for another alkane?
The experiment shown is carried out.
What process occurs?
cracking
dehydrogeneration
distillation
polymerisation
Which of the compounds below are isomers of each other?
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
