Which one of the following acids is present in lemon juice ?
Correct answer: A. Citric acid
- A. Citric acid
- B. Benzoic acid
- C. Tartaric acid
- D. Oxalic acid
Explanation
Lemon juice contains a high concentration of citric acid, C6H8O7, which gives it its characteristic sour taste. Tartaric acid is prominent in tamarind and grapes, while benzoic and oxalic acids are not the principal acids of lemon juice. Students may choose oxalic acid because citrus fruits are sometimes loosely associated with oxalates, but citric acid is the characteristic lemon acid.
Last updated
About Reactivity of Carboxylic Acids
Carboxylic acids show acidic behaviour because their carboxylate ions are resonance-stabilised, and electron-withdrawing groups can change their strength. Reactions include neutralisation, esterification, formation of acid chlorides and amides, reduction, decarboxylation and substitution at the acyl carbon, which differs from the reactions of phenols.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
Acetic acid is soluble in?
An acid with unpleasant smell_________________?
Arrange the following in increasing strength of carboxylic acid with respect to chloro-substituted acids?
Carboxylic acid forms alcohol in the presence of LiAlH4 and the process is:
Carboxylic acid on reduction with HI / phosphorous yields_________________?