which compound is this??


tweenkie butt , Thursday, 5th of August 2010 05:56:37 PM

in my chem lab l got this white compound.. It was amorphous. the anion was 
tweenkie butt
sulphate. and cation was either aluminium or magnesium.. l added NaOH and 
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got a white ppt.. Added NAOH till half the test tube was filled.. The 
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white ppt persisted.. Which compond is it?

l also got an 
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organic compound.. l added 2,4-Dinitrophenylhydrazineand got an orange 
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color. and then l added schiffs reagent and got a pink color. It had a 
weird smell. Kinda similar to acetic acid but its not acetic acid. and 
then l conducted the tollens test and got a black ppt.. so which compound 
is this?
 
 
 
 
 

Big Foot , Friday, 6th of August 2010 03:05:30 PM

The first one may be magnesium sulphate - only it is not  
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amorphous. It should be crystalline unless someone has made a fine powder  
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of it. The 2nd one is acetaldehyde.  
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Gempochi , Saturday, 7th of August 2010 09:29:30 AM

You get a silver mirror or a black ppt on using Tollen is  
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Reagent for an aldehyde  
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so, i guess it was an aldehyde.  
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and the salt was Magnesium Sulphate.  
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Papi , Sunday, 8th of August 2010 10:07:29 PM

- the first compound is Magnesium sulphate.  
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- the second compound is ketone ( acetone )  
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beccaboo , Monday, 9th of August 2010 09:38:09 AM

magnesium sulphate  
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President Gumcheeks :)) , Tuesday, 10th of August 2010 04:51:34 PM

magnesium sulphate  
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MgSO4  
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sexy boo , Wednesday, 11th of August 2010 07:38:21 PM

ALsul.  
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angel cakes , Thursday, 12th of August 2010 10:44:43 AM

a ketone? not sure :P  
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