And the apparatus that generated it from sodium hydrogen sulphate. note white fumes issuing from drying tube
Just needs sensible precautions as always!
j_sum1 - 16-6-2015 at 03:02
Ok plastics. You just earned your hazard to others badge!
100th post in classy fashion.Molecular Manipulations - 16-6-2015 at 10:57
I've made it a couple times, decomposition of a metal sulfate was my method. Using an all glass apparatus and leading the sulfur trioxide into 98%
sulfuric acid worked fine, not easy, not practical.Loptr - 16-6-2015 at 10:59
I've made it a couple times, decomposition of a metal sulfate was my method. Using an all glass apparatus and leading the sulfur trioxide into 98%
sulfuric acid worked fine, not easy, not practical.
What sort of temperatures are we talking about in order to decompose the metal sulfate? Also, how long does this reaction typically take?
Also, wouldn't you have issues with the glass breaking on cooling with the cake still inside?Molecular Manipulations - 16-6-2015 at 12:00
I used a quartz tube the second time, and the metal being copper (II) sulfate, the required temperature is only around 550°C, although I used closer
to 600°C. I was impatient and didn't wait for the reaction to complete, got only 12% yield (by decomposed sulfate), which took about 30 minutes from
the time heat was added to when I turned off the Bunsen. The small quantity of 98% acid and turned to just over 110%, acc. to my acid titration. Which
I had calculated to be about 93-95% SO3 absorption (including potential sulfur (VI) reduction by the high temperatures).
The first time I hardly did any analysis of yields and thus have no data.jock88 - 17-6-2015 at 05:23
