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Topic: pH in a solution of aluminium chloride hexahydrate and ethanol  (Read 3255 times)

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Offline pi87

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pH in a solution of aluminium chloride hexahydrate and ethanol
« on: January 24, 2012, 06:20:06 AM »
Hi.

How can I calculate the pH of a solution consisting of:
- 25g aluminium chloride hexahydrate
- 75g absolute ethanol

Thanks in advance!
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Offline SE_K800i

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Re: pH in a solution of aluminium chloride hexahydrate and ethanol
« Reply #1 on: February 06, 2012, 11:18:14 PM »
Do you mean the pH of 2 single solutions or a mixture?
With 2 single solutions:
- 25g AlCl3.6H2O: you need to know the equilibrium constant of the hydrolysis reaction AlCl3. And then we calculate the pH as a weak acid.
- 75g absolute ethanol: ethanol is not the electrolyte in water. So the solution is approximate to a neutralized solution.
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