How can you make sure that all of the water of hydration has been removed?

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How can you make sure that all of the water of hydration has been removed?

I need to know this for chem lab. Thank You all

2006-10-03 14:25:37 · 3 answers · asked by HeTrP 1 in Science & Mathematics ➔ Chemistry

3 answers

heat it. Water boils at 100C. In most labs, removal of moisture is done by heating to 105C for a period of 24hrs.

2006-10-03 14:32:10 · answer #1 · answered by squanto 2 · 0⤊ 0⤋

If you know the original hydration state of the compound, you can easily calculate the mass of the compound after dehydration. Heat it until its mass reaches the calculated value.

2006-10-03 22:43:12 · answer #2 · answered by PaulCyp 7 · 0⤊ 0⤋

My guess: heat the sample until you think its okay. Let it cool, mass it heat it again. Repeat: if the mass stays the same all the water is gone, if its less - theres still water

2006-10-03 21:37:21 · answer #3 · answered by musicovermind 1 · 0⤊ 0⤋