Question - Properties of Sulfide Compound from Onions
Solution:
The question refers to the release of a sulfide compound when cutting onions, which causes irritation to the eyes. Let's evaluate each statement provided in the question:1. It is soluble in water.Syn-propanethial-S-oxide is the chemical released from onions which causes the eyes to water, and it is indeed water-soluble. This is why peeling onions under running water can help reduce the irritation as the compound is washed away before it can reach the eyes.2. It has a low boiling point.This statement is likely to be true as well because the compound is volatile (it easily vaporizes), which is why it can reach the eyes and react with the moisture to form sulfuric acid, resulting in irritation.3. It has small and light ions with weak bondings.This statement is not accurate. The compound released by onions is not ionic; it's a small organic molecule with covalent bonding, so it does not have ions.4. It is a covalent compound with weak covalent bonds.This statement is partially true. The compound does have covalent bonds, as it's an organic molecule. However, not all the bonds in the molecule are necessarily weak; it has a variety of covalent bonds with different strengths.Given the information and the nature of the compound, the true statements would be:- It is soluble in water, which supports statement 1.- It has a low boiling point, which supports statement 2.Therefore, based on the provided options, statements 1 and 2 are true about the sulfide compound released when cutting onions.
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