WorksheetsChapter Quiz in Carboxylic acids
Total questions: 60
Worksheet time: 33mins
The products of the reaction of a carboxylic acid and an alcohol would be :
Ketone and water
Amide and water
Acid chloride and water
Ester and water
The boiling points of carboxylic acids is higher than those of corresponding alcohols . This is due to:
Strong London dispersion forces
Strong dipole dipole interaction
Strong hydrogen bonded dimer
Strong covalent bond
Which is the correct IUPAC name of the following compound?
A. 2-hydroxybutanoic acid
B. 3-hydroxybutanoic acid
C. 2-hydroxypropanoic acid
D. 1-carboxypropan-2-ol
What is the product formed when 1-hexanol reacts with PCC/CH2Cl2 ?
hexene
hexanoic acid
hexanal
hexane
Which of the following compounds known as m-nitrobenzoic acid?
Which of the following carboxylic acids is expected to have the highest boiling point?
CH3CH2COOH
CH3CH(OH)COOH
CH2(COOH)2
CH3CH(Cl)COOH
Which alkyl benzene cannot be oxidised by KMnO4 to produce carboxylic acid?
Toluene
2-iodotoluene
benzene
ethylbenzene
What is the product formed when 2-butanol heated with acidified KMnO4 solution?
butanone
butene
butanoic acid
butane
What is the main reason carboxylic acid has the highest boiling point as compared to other compounds with comparable mass?
It has carboxyl functional group.
It is a strong acid.
It exists in a form of dimer.
It can form hydrogen bond
What factor can decrease the solubility of carboxylic acid in water?
The increase in length of the hydrocarbon chain.
The decrease in length of the hydrocarbon chain.
The increase in number of carboxyl group.
The number of hydrogen bond.
Which of the following statements is TRUE?
Ethanoic acid is completely soluble in water because it can dimerise in the presence of water.
Ethanoic acid is completely soluble in water because it has 2 carbon atoms.
Ethanoic acid is completely soluble in water because it can form hydrogen bond and van der Waals forces with water molecules.
Ethanoic acid is completely soluble in water because it has small hydrophobic group.
Boiling points of carboxylic acids is higher than those of corresponding alcohols.
Is the above statement True or False?
True
False
Reaction of a carboxylic acid and sodium hydroxide will produce:
a substituted ammonium salt
a substituted carbonate salt
a substituted water
a substituted carboxylates
Which of these molecules are named ethanoic acid?
What is the characteristic functional group of carboxylic acids?
Carbonyl
Hydroxyl
Carbon
Carboxyl
What is the suffix for carboxylic acids?
-ic acid
-oic acid
-oic
When 2-propanol is heated with conc. H2SO4 , what is the product formed?
propanoic acid
propane
propene
propanal
The reaction between HCOOH and CH3COOH produces an ester called methyl methanoate.
True
False
Which is the correct order of boiling points of carboxylic acids, from the lowest to the highest?
methanoic acid, ethanoic acid, butanoic acid, propanoic acid
methanoic acid, propanic acid, butanoic acid, ethanoic acid
methanoic acid, ethanoic acid, propanoic acid, butanoic acid
ethanoic acid, methanoic acid, propanoic acid, butanoic acid
What is the main reason carboxylic acid has the highest boiling point as compared to other compounds with comparable mass?
It has carboxyl functional group.
It is a strong acid.
It has higher induced dipole-dipole interactions.
It can form hydrogen bond in water.
What is the name of this ester?
Methyl Propanoate
Methyl Methanoate
Ethyl Ethanoate
Methyl Ethanoate
Which of these compounds is the most soluble in water?
1,2-propanediol
Ethanoic acid
Propanol
ethanedioc acid
The molecular formula of pentanoic acid is
C5H11O2
C5H9O2
C5H10O2
C5H12O2
What is the correct IUPAC name for the Carboxylic Acid shown?
1,1,1-trimethylbutanoic acid
1,1,1-trimethylpentanoic acid
4,4-dimethylbutanoic acid
4,4-dimethylpentanoic acid
Ethanol reacts with ethanoic acid to form ethyl ethanoate.
C2H5OH + CH3COOH → CH3COOC2H5 + H2O
What is the formula of the ester formed when methanol reacts with butanoic acid, (C3H7COOH)?
C2H5COOC2H5
C3H7COOC2H5
C3H7COOCH3
CH3COOC3H7
Which of these statements is FALSE regarding the following reaction?
The reactant can be synthesized in a reaction between an alcohol and an acid chloride.
The carbon-oxygen bond in the product is longer than the carbon-oxygen bond of the carbonyl in the reactant.
The reactant has a lower pKa than the product.
The product can react with SOCl2 to form 1-chloropropane
Which of the following acids is the most soluble in water?
acetic acid
benzoic acid
stearic acid
Caprylic acid
Give the name for the below structure based on IUPAC nomenclature.
A 2-methyl-4-butanoic acid
B 2-methyl-4-pentanoic acid
C 3-methylbutanoic acid
D 3-methylpentanoic acid
Which carboxylic acid is most acidic?
CH3CH2CH2COOH
CH3CH2CH(Cl)COOH
CH3CH(Cl)CH2COOH
ClCH2CH2CH2COOH
Reaction of a carboxylic acid and a primary amine will produce:
a substituted ammonium salt if heat is added
a secondary amine
a tertiary amine
an amide if heat is added
When benzyl alcohol is oxidised with KMnO4, the product obtained is which of the following compound?
Benzaldehyde
Benzoic acid
CO2 and H2O
Benzophenone
What factor can decrease the solubility of carboxylic acid in water?
The increase in length of the hydrocarbon chain.
The decrease in length of the hydrocarbon chain.
The increase in number of carboxyl group.
The number of hydrogen bond.
Esters are formed through what type of reaction?
hydrolysis
condensation
hydration
dehydration
An ester is used specifically for:
fuel
additives in petrol
flavourings
hair dye
Esters are known for......
the bright colours
flammability
exploding
fruity smell
When detecting the odour of a chemical you should...
put your nose over the chemical and take a deep breath
use your hand to fan the odour towards your nose.
What catalyst is used in making esters?
sodium hydroxide
iron
sulfuric acid
lithium oxide
What is the name of the compound shown?
propyl ethanoate
ethyl ethanoate
ethyl propanoate
methyl ethanoate
What is the name of the compound shown?
How would ethanoic acid be different from ethane?
Higher boiling point
Lower boiling point
Less reactive
What gas is produced when potassium carbonate reacts with ethanoic acid?
hydrogen
carbon dioxide
oxygen
chlorine
Explain why the pH of 0.1 mol/dm3 hydrochloric acid is lower than the pH of 0.1 mol/dm3 ethanoic acid
Hydrochloric acid is a strong acid so is fully ionised.It has a higher concentration of H+ ions, so a lower pH.
Hydrochloric acid is a weak acid so is fully ionised.It has a higher concentration of H+ ions, so a lower pH.
Hydrochloric acid is a strong acid so is partially ionised.It has a higher concentration of H+ ions, so a lower pH.
Hydrochloric acid is a strong acid so is fully ionised.It has a lower concentration of H+ ions, so a lower pH.
Esters have distinctive sweet smells, and are volatile liquids. What does volatile mean?
flows easily
catches fire easily
evaporates easily
colours easily
What gas is produced when magnesium reacts with ethanoic acid?
hydrogen
carbon dioxide
oxygen
chlorine
Ethanoic acid is described as a weak acid. Explain what this means in terms of ionisation
fully ionised
partially ionised
deionised
Complete the following equation, which show what happens when ethanoic acid dissolves in water.
CH3COOH(aq)⋚ CH3COO– (aq) + _______
H
H-
H+
H2
What are some common uses of esters? (Select all that apply)
perfumes
flavourings
clothing
nappies
Which of the following is the salt of a long-chain fatty acid?
Fat
Oil
Soap
Glycerol
Oils contain carbon to carbon double bonds which can undergo addition reactions with iodine. The iodine number of an oil is the mass of iodine in grams that will react with 100 g of oil. Which line in the table shows the oil that is likely to have the lowest melting point?
A
B
C
D
vegetable oil --> vegetable fat
Which of the following reactions brings about the above change?
Hydrolysis
Condensation
Hydrogenation
Dehydrogenation
Which of the following is an isomer of ethyl propanoate (CH3CH2COOCH2CH3)?
Methyl propanoate
Pentan-2-one
Pentanoic acid
The structure of pivalic acid is shown. Which of the following is the correct systematic name of pivalic acid?
pentanoic acid
2,2,2-trimethylethanoic acid
2-ethylpropanoic acid
2,2-dimethylpropanoic acid
What is the IUPAC name of this compound?
benzoyl propionic anhydride
benzoyl propyl anhydride
benzene propionic anhydride
benzoic propanoic anhydride
What is the IUPAC name of this compound?
2-methylbutanoyl pentanoyl anhydride
2-methylbutanoic pentanoic anhydride
2-methylbutyl pentyl anhydride
Acid anhydrides can be converted into ketones by using ___________________
hydrolysis reaction
oxidation reaction
reduction reaction
Friedel-Craft Acylation of benzene
