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Topic: Enthalpy and Entropy of Aqueous Solutions  (Read 3896 times)

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Offline fredp

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Enthalpy and Entropy of Aqueous Solutions
« on: August 21, 2010, 10:01:33 AM »
Hi,

Can someone explain how to calculate the standard enthalpy and entropy of aqueous acid solutions--say at 1 molar. 

I know these values are published for common mineral acids like HCl, but if you look at sources like NISTWebbook, only the gaseous values for these acid are published. 

I assume there is some way to calculate it from the thermodynamic properties of the ions in the resulting solution because these values seem available.

Thanks for any help.

Offline zeoblade

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Re: Enthalpy and Entropy of Aqueous Solutions
« Reply #1 on: August 21, 2010, 10:34:29 AM »
they should be in the CRC handbook of physics and chemistry because that's where i would check first

Offline fredp

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Re: Enthalpy and Entropy of Aqueous Solutions
« Reply #2 on: August 21, 2010, 07:44:32 PM »
So you can't calculate with NIST Webbook data?

Offline zeoblade

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Re: Enthalpy and Entropy of Aqueous Solutions
« Reply #3 on: August 21, 2010, 07:48:12 PM »
i've never used that before. if you can find it with that, you should be able to. you just need to look for the enthalpy of solution under standard conditions. its a phase transition so it should be under enthalpy of transitions

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