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Can calcium chloride be a gas?

Answer 1

It can, but not at ordinary temperatures. On a quick google search, one finds the normal boiling point of #"CaCl"_2# to be #1935^@ "C"#, or #"2208.15 K"#, i.e. at #"1 atm"#.

If you really wanted to find #"CaCl"_2(g)#, you'd have to place it in an extremely hot flame, and you won't be able to easily achieve that.

For example, a propane torch generates flames generally around #"2268 K"#, while an oxyacetylene combustion generates a flame temperature up to around #"3573 K"#. Ordinary candles are around #"1373 K"#.

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Answer 2

Jeremiah Adams

No, calcium chloride cannot exist as a gas under standard conditions. It is typically found as a solid or dissolved in water as a solution.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.