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Old 05-29-2006   #1 (permalink)
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Energy of hydrogen bonds

Ok all you clever peeps, help me with this:

The bond energy of a hydrogen bond can be measured using chloroform and acetone....

1 using the equation E=m x s x θ, where E= energy, m= mass in grams of solvent, θ = temp change. TRUE OR FALSE

2. when acetone is not in molar excess TRUE OR FALSE

3. without any heat loss from the apparatus TRUE OR FALSE
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Old 05-29-2006   #2 (permalink)
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Re: Energy of hydrogen bonds

Hey, take a moment and look this up in your textbook.

Let me see if I can help.

Quote:
Originally Posted by joho
1 using the equation E=m x s x θ, where E= energy, m= mass in grams of solvent, θ = temp change. TRUE OR FALSE
This can't be true, I don't see the mole concept in the scene

Quote:
Originally Posted by joho
2. when acetone is not in molar excess TRUE OR FALSE
No idea, this is practical, not conceptual

Quote:
Originally Posted by joho
3. without any heat loss from the apparatus TRUE OR FALSE
Hell ofcourse true, 'cos if you lose all the heat then θ could be zero.


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Old 05-29-2006   #3 (permalink)
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Re: Energy of hydrogen bonds

You will do a calorimetric titration of acetone and chloroform and get out the enthalpy of interaction, kcal/mole. That's no big whoop. Google has 18,900 hits on the experiment.

Me2CO and CHCl3 is a very trippy mix for all sorts of reasons, physical chemical and organic. Is yor TA taking care of the waste crock? Your mixed sovlent is explosive given a common contaminant added. What is the primary reaction and the amusing side reaction?


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Old 06-02-2006   #4 (permalink)
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Re: Energy of hydrogen bonds

Its just a theoretical question, not an actual experiment I'm having to do. TG.
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