The carboxyl group, represented by the formula -COOH, is the defining functional group of carboxylic acids. It consists of a carbonyl group (C=O) bonded to a hydroxyl group (-OH). Alcohols contain only -OH, aldehydes contain a formyl group (-CHO), and ketones contain a carbonyl group bonded to two carbon atoms.
3222
In which of the following substances is citric acid found in its free form?
Citric acid is a weak organic acid naturally occurring in high concentrations in citrus fruits. Lemons are well-known for their high citric acid content, which provides their characteristic sour taste. Tamarind contains tartaric acid, while apples contain malic acid.
3223
What is the product of reducing a carboxylic acid with HI and phosphorous?
When a carboxylic acid is reduced with HI and phosphorous, the carbonyl group is completely reduced, resulting in the formation of an alkane. This is because the strong reducing agent HI converts the acid group into a methyl group, producing an alkane.
3224
What is the final product formed when a carboxylic acid undergoes complete reduction?
Complete reduction of a carboxylic acid involves the addition of hydrogen atoms, ultimately converting the carbonyl group (C=O) into a methylene group (CH2). This process results in the formation of an alkane.
3225
The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?
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Acidic amino acids are defined by the presence of two carboxylic acid groups (-COOH) that can donate protons, making them acidic. They also possess one amino group (-NH2) that can accept protons.
Lactic acid is not an amino acid, it is a carboxylic acid. Amino acids, on the other hand, are organic compounds that contain both an amino group and a carboxyl group. Glumatic acid, aspartic acids, and glycine are all examples of amino acids.
3229
What type of carboxylic acid is depicted in the blank?
Maleic acid is an unsaturated carboxylic acid, meaning it has a carbon-carbon double bond. This distinguishes it from the other options, which are all saturated carboxylic acids.
3230
What is the product of methyl alcohol oxidation using acidified K2Cr2O7?
Methyl alcohol (CH3OH) is oxidized to formic acid (HCOOH) when treated with acidified K2Cr2O7, a strong oxidizing agent. This reaction involves the conversion of the primary alcohol to a carboxylic acid, resulting in formic acid as the product.
