Melvin Posted January 9, 2008 Posted January 9, 2008 I have an experiment that involves bubbling sulfur dioxide through ~40% nitric acid. Would silicone rubber tubes (from an aquarium store) be able to handle the nitric acid or would I need glass?
YT2095 Posted January 9, 2008 Posted January 9, 2008 Use Glass! I gotta ask though, What is it supposed to do? I can see it making a mix of acids, Nitric Sulphurous and possibly sulphuric.
Melvin Posted January 9, 2008 Author Posted January 9, 2008 According to sciencemadness, it will create H2SO4 and NO as a byproduct. I'm just testing it on a small scale. 3SO2 + 2HNO3 + 2H2O --> 3H2SO4 + 2NO
YT2095 Posted January 9, 2008 Posted January 9, 2008 well HNO3 is a Very good oxidiser, so it`s certainly conceivable although H2O2 would probably cheaper to buy and can leave no contamination traces. but yes, use Glass, even if it`s just for the parts that are immersed in the Liquid side (SO2 will still attack the rubber though).
Melvin Posted January 9, 2008 Author Posted January 9, 2008 Actually, the nitric will be regenerated because the SO2 + HNO3 reaction gives off NO as well, which can be mixed with oxygen and bubbled into water. The thread on scimad is http://www.sciencemadness.org/talk/viewthread.php?tid=2824 Page two is where the idea is mentioned.
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