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Author Topic: chemistry problem  (Read 1283 times)

Offline NotAbod

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chemistry problem
« on: March 16, 2011, 08:29:40 pm »
hello
what is suck back?
is there any effects to the apparatus if it occurs?
a similar question is in 2010 winter paper 6, question 1
help please my chemistry mock exam is tommorow
time is 11:30 pm try to help pl0x
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Offline Amii

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Re: chemistry problem
« Reply #1 on: March 16, 2011, 09:44:31 pm »
Suck back would basically mean the back flow of a substance.

In that experiment gas is collected over water. If heating is stopped before the delivery tube is removed from the water -the water will rise up the delivery tube as the pressure in the reaction tube decreases(since it cools).The water can flow back/can be sucked back into the hot boiling tube causing it to crack - an explosion might occur.

Hope this helps

Take care and good luck  :D
« Last Edit: March 16, 2011, 09:48:31 pm by Amii »
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Offline NotAbod

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Re: chemistry problem
« Reply #2 on: March 16, 2011, 09:50:55 pm »
very helpful
thanks for the fast reply :)
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Offline Amii

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Re: chemistry problem
« Reply #3 on: March 16, 2011, 09:52:54 pm »
Quote from: Abod on March 16, 2011, 09:50:55 pm
very helpful
thanks for the fast reply :)
No problem  :D
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