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Topic: OH and solubility  (Read 5425 times)

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Jill

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OH and solubility
« on: May 12, 2004, 11:54:46 AM »
Is it true? the more OH groups an alcohol has the more soluble it is in water?

Edited title for clarity. Mitch
« Last Edit: May 12, 2004, 01:52:20 PM by Mitch »
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Offline Mitch

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Re:Is this true
« Reply #1 on: May 12, 2004, 01:51:26 PM »
in general, yes.
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Offline AWK

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Re:OH and solubility
« Reply #2 on: May 14, 2004, 02:52:15 AM »
Cellulose or starch have thousends hydroxyl grups and are insoluble in water.
Solubility also depends on mass of molecule.
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Offline Donaldson Tan

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Re:OH and solubility
« Reply #3 on: May 14, 2004, 01:01:55 PM »
Solubility would depends on:

1. length of the carbon chain
    - big molecules are insoluble virtue of their size

2. No. of -OH available
    - more OH present = more H-bonding sites

3. hydroxyl group arrangement
   - -OH are projected towards each other in cellulose
   - whether the OH is available for H-bonding
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