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29 Jul 2008, 9:09 PM
| #1 (permalink) |
| New Member  HSC: 2008 Gender: Female
Join Date: Nov 2007
Posts: 8
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17 Feb 2009, 12:31 PM  | Production of NaOH - what order? You can hide this advertisement by registering. I've always thought that the order that the cells were discovered/used in were the diaphragm cell, the mercury cell, then the membrane cell... but the hsc question from 2007 (http://boardofstudies.nsw.edu.au/hsc...emistry_07.pdf) implies that it was mercury, diaphragm, membrane. So which was it? Probably doesn't matter, but I'd rather know all the same... |
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31 Jul 2008, 11:47 AM
| #2 (permalink) |
| Member  HSC: 2008 Gender: Male Location: The labyrinth of your mind
Join Date: Aug 2007
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15 Mar 2009, 3:28 PM | Re: Production of NaOH - what order? Hey, I was confused too when i saw the 07 quesiton. The conquering chemistry textbook claims that the Mercury process was developed as a response to the issues associated with the diaphragm process (i.e. use of asbestos, impure product from NaCl contamination etc) But when you think about it, its more logical that the Diaphragm process replaced the Mercury process as the next step in innovation is the Membrane process, which is just a modification of the former. I don't have any actual dates on when the respective processes were invented/implemented, if you could find those you'd get a more definate answer. |
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31 Jul 2008, 3:18 PM
| #3 (permalink) |
| Self-delusive  HSC: 2008 Gender: Male
Join Date: Dec 2007
Posts: 598
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16 Jul 2009, 10:43 PM | Re: Production of NaOH - what order? Except for Conquering Chem, all the other text books I've read indicate that Mercury-Diaphragm-Membrane.
__________________ BPharmacy @ Usyd Class' 2013 When I was a child I caught a fleeting glimpse. Out of the corner of my eyes I turned to see but it was gone I cannot put my finger on it now The child is grown, the dream is gone... (Confortably numb - Pink Floyd) |
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