Question - Understanding Sulfide Compound in Onions
Solution:
The image presents a set of statements about the sulfide compound released when cutting onions. To solve which of these statements are true about the sulfide compound, we need to analyze each statement:1. **It is soluble in water.** - The fact that peeling onions under running water reduces the problem suggests that the sulfide compound released by onions is at least partially soluble in water. The water likely dilutes or washes away the compound, thus reducing its effect on the eyes.2. **It has a low boiling point.** - This statement is likely true because the compound vaporizes at room temperature or below the boiling point of water, allowing it to reach the eyes and cause irritation. If it had a high boiling point, it would not vaporize as easily and thus would not affect the eyes as much.3. **It has small and light ions with weak bondings.** - This statement is somewhat ambiguous because the sulfide compounds released by onions are not ionic compounds; they are actually small, volatile sulfur-containing organic molecules. Therefore, they do not have ions but instead have covalent bonds.4. **It is a covalent compound with weak covalent bonds.** - This is true, as the compounds responsible for the tearing effect are covalent molecules. They contain relatively weak bonds that can be broken, allowing for the compound to volatilize and irritate the eyes.Based on the above analysis, the true statements are likely 1 and 2, and possibly 4, depending on what is meant by "weak covalent bonds." Statement 3 is not correct because the compound is not ionic.
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