Chlorine gas is described as heavier than air and what color?

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Prepare for the ADEQ Water Treatment Grade 4 Test. Study with flashcards and multiple-choice questions, with each question offering hints and explanations. Ace your exam!

Multiple Choice

Chlorine gas is described as heavier than air and what color?

Explanation:
Chlorine gas has a distinct color in addition to being heavier than air. It appears as a pale greenish-yellow in the atmosphere. This color comes from how chlorine absorbs and reflects light in the visible spectrum, giving it that yellow-green tint when you can see it. So the best description is green-yellow. It’s worth noting that this gas is highly toxic, so its presence is often detected by more than just color, but the color is a reliable identifying feature. The other colors (blue, red) don’t match chlorine’s appearance, and some gases are colorless, but chlorine is not.

Chlorine gas has a distinct color in addition to being heavier than air. It appears as a pale greenish-yellow in the atmosphere. This color comes from how chlorine absorbs and reflects light in the visible spectrum, giving it that yellow-green tint when you can see it. So the best description is green-yellow. It’s worth noting that this gas is highly toxic, so its presence is often detected by more than just color, but the color is a reliable identifying feature. The other colors (blue, red) don’t match chlorine’s appearance, and some gases are colorless, but chlorine is not.

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