Hemiacetals and Acetals Part 1

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✔ https://StudyForce.com • ✔ https://Biology-Forums.com • ✔ Ask questions here: https://Biology-Forums.com/index.php?... • Follow us: • ▶ Facebook: / studyforceps • ▶ Instagram: / studyforceonline • ▶ Twitter: / studyforceps • Q1. Identify each of the following as a hemiacetal or acetal: • a. A hemiacetal has a carbon bonded to one alkoxy group and one hydroxyl group. • b. An acetal has a carbon bonded to two alkoxy groups. • c. A hemiacetal has a carbon bonded to one alkoxy group and one hydroxyl group. • • Q2. From the following descriptions, identify the compound as a hemiacetal or an acetal: • a) a molecule that contains a carbon atom attached to a hydroxyl group and an ethoxy group • b) a molecule that contains a carbon atom attached to two ethoxy groups • Q3. Draw the condensed structural formulas for the hemiacetal and acetal formed when methanol adds to propanal. • To form the hemiacetal, the hydrogen from methanol adds to the oxygen of the carbonyl group to form a new hydroxyl group. The remaining part of the methanol adds to the carbon atom in the carbonyl group. The acetal forms when a second molecule of methanol adds to the carbonyl carbon atom. • Q4. Draw the condensed structural formula for the acetal formed when methanol adds to butanone.

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