Which of the following statements is correct?

Question

Canvas Classes · Accepted Answer

Gluconic acid — properties and preparation:

Gluconic acid () is formed by oxidation of the aldehyde group (–CHO) of glucose to a carboxylic acid (–COOH), while the –CH₂OH at C6 remains unchanged.

Evaluating each statement:

(1) Gluconic acid can form cyclic hemiacetal structure — INCORRECT ✗
Gluconic acid has a –COOH at C1, not –CHO. A carboxylic acid cannot form a hemiacetal. (Glucose can form cyclic hemiacetal because it has –CHO.)

(2) Gluconic acid is a dicarboxylic acid — INCORRECT ✗
Gl

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