Fill in the blanks:S.No.Molecular FormulaCommon NameIUPAC Name1.CH3COOH[[1]]Ethanoic Acid2.HCHOFormaldehyde[[2]]

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Fill in the blanks:
S.No. Molecular Formula Common Name IUPAC Name
1. CH₃COOH [[1]] Ethanoic Acid
2. HCHO Formaldehyde [[2]]

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answer is ACETIC ACID, METANAL.

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Detailed Solution

IUPAC nomenclature stands for International Union of Pure and Applied Chemistry (IUPAC). It is a system with a set of rules which helps in the naming of compounds.

${CH}_{3} COOH :$ The given compound is a carbon compound containing an acidic group (COOH). According to IUPAC suffix "oic" to the carbon chain followed by acid is added for the acidic functional group and as there are two carbons in the chain the name is ethane+ oic acid. That is IUPAC name is ethanoic acid and the common name is acetic acid.

$HCHO$ : The given compound is a carbon compound containing an aldehyde group (CHO). According to IUPAC suffix "al" is added to the carbon chain for the aldehydic functional group and as there is one carbon in the chain the name is methane+ al that is name is methanal. The common name of this compound is formaldehyde.

Hence answer is