contradiction is BR ochem

[batista_123]

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for number 42 on page 293 of the second part of ochem, it says "a compound can be separated using extraction as long as it is not reactive in any of the mediums." and then they give an example where ester will react to hydrolysis...

but then on page 297, #70, it says acid-base extraction is not viable because the product has no acid-base properties.

so for instance, butane. can it be separated using extraction? the answer to number 42 seems to say yes, because it is not going to react to hydolysis

but the answer to #70 indicates no, it cannot, because butane has no acidic hydrogens

so which is it?

 

[loveoforganic]

You can use an acid base extraction to obtain a nonpolar compound with no acidic hydrogens or basic sites, but only if it's the ONLY nonpolar compound with no acidic hydrogens or basic sites.

 

[matth87]

It depends on what else you are separating it from.

If you can use extraction to separate everything out of the organic layer then you could isolate butane.

If you cant separate everything out of the organic layer then your not going to be able to separate butane.