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Topic: Using Calcium chloride to desiccate a cyclohexene product  (Read 3178 times)

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Offline Charkol

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Using Calcium chloride to desiccate a cyclohexene product
« on: November 05, 2010, 09:21:56 PM »
In Lab we have made cyclohexene from cyclohexanol. 

The last reaction I am to delineate is the removal of water from the cyclohexene product.  I am not sure about how exactly this 'reaction' is taking place.  I have looked around a bit and have found different answers.

Some say that there is no reaction at all...that in this situation, the water molecules just 'gather' around the CaCl2 molecules.

Others say that in this situation the product of this 'reaction' are CaOH and Cl2 gas.

Any help to resolve this question will be appreciated.

Offline Borek

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Re: Using Calcium chloride to desiccate a cyclohexene product
« Reply #1 on: November 06, 2010, 05:25:57 AM »
Some say that there is no reaction at all...that in this situation, the water molecules just 'gather' around the CaCl2 molecules.

You can put it this way, although this IS kind of a reaction. Hydrated calcium chloride is stable and can be separated from the reaction products.
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Offline Charkol

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Re: Using Calcium chloride to desiccate a cyclohexene product
« Reply #2 on: November 07, 2010, 12:09:26 PM »
Thanks, this is what I was hoping, as this made more sense to me.  I noticed that the hydrated form of these desiccators is written as [CaCl2*6H2O].  This doesn't imply a reorginizational reaction, and thankfully there is no bond breaking.
Thanks Much

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