Introduction: Determine the Enthalpy Change in Hydration of Anhydrous Magnesium Sulfate (MgSO4)

This is a video about how to determine the Enthalpy of hydration, I take Magnesium sulfate as an example to illustrate how it is determined. Hydrated MgSO4 and Anhydrous MgSO4 is dissolved seperately and temperature change is recorded, DeltaH of Anhydrous MgSO4 - DeltaH of Hydrated MgSO4 = Enthalpy of hydration.

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Music: Blue Scorpion by Kevin MacLeod @
Licensed under Creative Commons "Attribution 3.0"


lemonie (author)2009-10-28

Shaken - it would help to post the maths in this, and maybe an explanation as to why people do these experiments?


cforchemistry (author)lemonie2009-10-29

I will do this later on, and I found the simplfied version of calculation seems to be the best.

lemonie (author)cforchemistry2009-10-29

Sodium acetate might be a good one to play with - it's reasonably popular stuff?


cforchemistry (author)lemonie2009-10-30

It is not reasonably popular stuff, it is extremely popular indeed! I considered to film about it, but I got other project to do, so maybe later.

lemonie (author)cforchemistry2009-10-30

Correct me if I'm wrong here, but the most interesting thing about magnesium sulphate (aka Epsom salts) is that they "go through you like a dose of salts" - i.e. they are a purgative?


cforchemistry (author)lemonie2009-10-30

It is what you said, purgative!

About This Instructable




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