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Aldehyde: Quiz


Question 1: The common names for aldehydes do not strictly follow official guidelines, such as those recommended by ________ but these rules are useful.
IUPAC nomenclaturePotassiumCarbonInternational Union of Pure and Applied Chemistry

Question 2: In the acetalisation reaction, under ________ or basic conditions, an alcohol adds to the carbonyl group and a proton is transferred to form a hemiacetal.
OxygenAcid dissociation constantAcidAcid–base reaction

Question 3: Simple hemiacetals are usually unstable, although cyclic ones such as ________ can be stable.

Question 4: In the past, aldehydes were sometimes named after the corresponding alcohols, for example, vinous aldehyde for ________.
EthanolAcetaldehydeAcetic acidAmmonia

Question 5: (Vinous is from ________ vinum = wine (the traditional source of ethanol), cognate with vinyl.)
Vulgar LatinLatinRoman EmpireOld Latin

Question 6: Under ________ conditions, the hemiacetal and the alcohol can further react to form an acetal and water.
Acid–base reactionAcid dissociation constantAcidOxygen

Question 7: Oxidation can be achieved by heating the alcohol with an acidified solution of ________.
Potassium dichromatePotassium chromatePotassium cyanidePotassium permanganate

Question 8: This ________ consists of a carbonyl centre bonded to hydrogen, O=CH-.
AlcoholEthyleneAlkaneFunctional group

Question 9: The name is formed by changing the suffix -e of the parent ________ to -al, so that HCHO is named methanal, and CH3CH2CH2CHO is named butanal.

Question 10: If replacing the aldehyde group with a ________ (-COOH) would yield a carboxylic acid with a trivial name, the aldehyde may be named by replacing the suffix -ic acid or -oic acid in this trivial name by -aldehyde.
AlcoholEsterAlkaneCarboxylic acid


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