Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
What is the functional group that characterises carboxylic acids?
-COOH
-COO-
-CHO
-OH
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How are carboxylic acids named after identifying the longest carbon chain?
remove the 'ane' from the alkene name, and add '-ic acid'
remove the 'e' from the alkene name, and add '-oic acid'
remove the 'e' from the alkane name, and add '-oic acid'
remove the 'ane' from the alkane name, and add '-ic acid'
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In an aqueous solution, carboxylic acids...
partially dissociate into hydrogen (H+) ions and carboxylate (RCOO-) ions
do not dissociate at all
completely dissociate into hydrogen (H+) ions and carboxylate (RCOO-) ions
dissociate into hydroxide (OH-) ions and carboxylate (RCOO-) ions
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What type of bonding allows small carboxylic acids to be very soluble in water?
covalent bonding
ionic bonding
induced diople-dipole bonding
hydrogen bonding
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Which of the following can be oxidised to form carboxylic acids?
(Select all that apply).
secondary alcohols
ketones
primary alcohols
aldehydes
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What is the general reaction for the hydrolysis of nitriles to form carboxylic acids?
RCN + 2H2O + HCl ➔ RCOOH + NH4Cl
RCN + 2H2O + NaOH ➔ RCOOH + NH4OH
RCN + H2O + HCl ➔ RCOOH + NH3
RCN + H2O + NaOH ➔ RCOOH + NH3
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When carboxylic acids react with reactive metals, what products are formed?
a carboxylate salt and water
a carboxylate salt, carbon dioxide, and water
a carboxylate salt and oxygen gas
a carboxylate salt and hydrogen gas
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What observable effect occurs when carboxylic acids react with carbonates?
a colour change
the solution becomes clear
effervescence due to carbon dioxide evolution
a precipitate forms
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What type of reaction occurs when carboxylic acids form primary alcohols?
reduction
neutralisation
oxidation
esterification
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What is the product of the reaction between ethanoic acid and sodium carbonate?
sodium ethanoate and hydrogen gas
sodium ethanoate, carbon dioxide, and hydrogen gas
sodium ethanoate, carbon dioxide, and water
sodium ethanoate and water
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What is the product of the reduction of ethanoic acid by LiAlH4?
ethane
methanol
ethene
ethanol
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Carboxylic acids are acids as they only partially dissociate in aqueous solutions.
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When carboxylic acids react with bases such as metal oxides and hydroxides, they undergo a reaction to form carboxylate salts and water.
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