Allright i'll copy it as i find it in the text. However, it might refer to some other synths that are not posted now but you'll get the idea:
Synthetic nitric acid:
With the use of the same aparatus with which one can make sulfuric acid, one can produce nitric acid too (the picture looks like 2 bottles, connected both to a wash-flask which then both have an exit tube, these 2 exit tubes then meet eachoter in 1 big tube under which a bunsen burner stands. This big tube is lead through an end flask with distilled water (that will be turned into nitric). This can be done by the oxidation of ammoniak (gas). To do this you'll need a ammoniak developer and a gasometer (god knows wtf that is, probably a container that regulates outflow presure in which you can mix gasses) which you'll fill with 2 parts air and 1 part oxygen. The ammoniak gas is lead through a wash-flask with a strong potassium-hydroxide solution and the oxygen-air mix is lead through a concentrated sulfuric acid mix (in the wash bottle ofcourse). By flowing both gas mixtures through wash-bottles you can re-check the speed the mixtures flow by looking at the bubbles. In the big tube that connects both gas outlets you'll need a catalyst which is a little lump of platinated asbest that is heated by the bunsen burner.
At the start of this experiment you'll begin by letting the air-oxygen mix flow through the big tube (of btw heat resistant glass that wont melt) with the asbest in it. Continue this flow and add start adding the ammoniak gas too. The ratio should be 5 times as much oxygen air mix as ammoniak gass. Now start heating the big tube/catalyst with the burner to approx. 400 degrees celsius. As soon as this temperature is reached you'll see the catalyst glow at which the ammoniak will be turned with oxygen into nitric-oxydes. This reaction will create a lot of heat. The tube will now fill with brown gasses which are lead into the big flask filled with a bit of water (does not say quantities). By shaking this flask in which the gasses are flowing you are creating a low concentration nitric acid solution.
My sidenotes:
A. this is incredibly difficult
B. try to get platinated asbest, lol
C. find yourself a gasometer
D. the concentration of the nitric will be damn low
E. i think this synth is for curiousity reasons only, lol.
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Harrrrrr!
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