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Topic: errors in reflux  (Read 15214 times)

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Offline abcc

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errors in reflux
« on: October 04, 2006, 07:53:05 AM »
what're the errors when i use the reflux condenser ???

Offline Yggdrasil

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Re: errors in reflux
« Reply #1 on: October 04, 2006, 02:20:08 PM »
Can you clarify your question?

Offline abcc

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Re: errors in reflux
« Reply #2 on: October 04, 2006, 06:59:51 PM »
Can you clarify your question?
I would like to know if i do the experiment that has the reflux process ,
then what's are the probable errors ???
For example, the reaction mixture basically don't has high  b.p.,and some are lost~etc.

Offline Yggdrasil

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Re: errors in reflux
« Reply #3 on: October 04, 2006, 11:10:39 PM »
Are you asking about common errors people make when using a reflux condenser?  If so:

1) Make sure to stir your solution or add boiling chips to your solution before heating.  Failure to do so can cause your solution to superheat and cause bumping.

2) Don't fill your flask more than half-way when boiling solutions.  Boiling solutions produce hot gasses.  Hot gasses expand.  Expanding gasses in enclosed spaces can cause explosions.

3)  Remember to cool your reflux condenser.  If it is jacketed, water should go in the bottom connection and out the top connection.  If it is not jacketed, wrap a wet paper towel around the condenser to keep it cool.

Hope this helps.

Offline abcc

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Re: errors in reflux
« Reply #4 on: October 06, 2006, 11:39:53 PM »
Are you asking about common errors people make when using a reflux condenser?  If so:

1) Make sure to stir your solution or add boiling chips to your solution before heating.  Failure to do so can cause your solution to superheat and cause bumping.

2) Don't fill your flask more than half-way when boiling solutions.  Boiling solutions produce hot gasses.  Hot gasses expand.  Expanding gasses in enclosed spaces can cause explosions.

3)  Remember to cool your reflux condenser.  If it is jacketed, water should go in the bottom connection and out the top connection.  If it is not jacketed, wrap a wet paper towel around the condenser to keep it cool.

Hope this helps.
yup~
thx :)

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