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October 09, 2025, 10:38:17 pm

Author Topic: Separation of Calcium Phosphide and Hydrated Iron (111) Chloride?  (Read 1992 times)  Share 

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Droolv

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I've been pulling my hair out over this question, so hopefully someone can help me

How would one go about separating a solid mixture of Calcium Phosphide and Hydrated Iron (III) Chloride (taking into account that calcium phosphide is explosive and toxic when it comes into contact with water)

Thanks!

jakesilove

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Re: Separation of Calcium Phosphide and Hydrated Iron (111) Chloride?
« Reply #1 on: March 05, 2016, 01:28:55 pm »
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I've been pulling my hair out over this question, so hopefully someone can help me

How would one go about separating a solid mixture of Calcium Phosphide and Hydrated Iron (III) Chloride (taking into account that calcium phosphide is explosive and toxic when it comes into contact with water)

Thanks!

Hey Droolv!

Great question! However, I think it may be a misleading one. As you are given Hydrated Iron (III) Chloride, the mixture of solids will already have water present (as this is the definition of a Hydrated substance). Therefore, if the question wanted you to consider the explosive nature of Calcium Phosphide, I don't think they would have given you this specific mixture! Try answering the question, whilst ignoring the specific nature of the compounds. Obviously, in real life you couldn't just add solution to something that will explode and become toxic, however as this is a Chemistry question I don't think it's something you're supposed to consider.

I also can't think of any other way of separating them, except for typical solubility rule techniques. Try doing it the regular way, and if you still need help let me know!

This is just one of the times that the HSC ignores reality, and makes you use completely theoretical examples. As unsatisfying as that is, you just need to go with it!

Jake
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Droolv

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Re: Separation of Calcium Phosphide and Hydrated Iron (111) Chloride?
« Reply #2 on: March 05, 2016, 02:44:35 pm »
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Thanks so much Jake, I understand fully now. This forum is great.

jakesilove

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Re: Separation of Calcium Phosphide and Hydrated Iron (111) Chloride?
« Reply #3 on: March 05, 2016, 02:50:03 pm »
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Thanks so much Jake, I understand fully now. This forum is great.

No problem! Glad you're finding it useful, and I look forward to seeing you more on the Forums!

Jake
ATAR: 99.80

Mathematics Extension 2: 93
Physics: 93
Chemistry: 93
Modern History: 94
English Advanced: 95
Mathematics: 96
Mathematics Extension 1: 98

Studying a combined Advanced Science/Law degree at UNSW