Introduction: I've spent some fair amount of time thinking about inventing an element to make part of my world easier for me. In this case, it is an LTA gas which I gave the WIP name LAL-gas (Leichter Als Luft - the german equiv. to Lighter Than Air). The gas is intended to be used to lift things from the ground (namely airships) with about 400-500% the lifting power of existing lifting gases (Hydrogen/Helium), as inert.
The LAL-gas itself would be the product of a reaction between the LAL-solid (I was thinking of it being a salt or sulfate) and diluted sulfuric acid (e.g. Acid Mine Drainage or Acid Rock Drainage) of high temperature. The result would be one: the LAL-gas itself; and two: a byproduct that is highly flammable, but will burn through rather fast. Said byproduct would hence be converted to smoke (soot, and co) and ash (probably poisonous).
Question: Is this lifecycle feasible? I.e. could it work as described or are there any inherent problems/stumbling blocks?
Addendum: The names are WIP names, proposals for names are welcome but not scope of this question. Proposed changes to the lifecycle in order to make it work are welcome.
Lore: You grew up with these ships dominating the skies, so did I to be honest. But did you know that the gas allowing for this was discovered rather by accident than on purpose? Tales say it was a little boy, just like you, that, while playing hide'n'seek, hid in an outcropping in the woods. There he stumbled and slid down into one of the many caves of the area, where he found plants with leaved as big as lily pads floating along the ceiling above a funny smelling pond. Upon touching the water he burnt himself, making him run back to his mother crying. The father had him show what burnt his fingers - which led to the accidental discovery of one of natures greatest gifts to us. You see, these purple stones village square is made of, they will react to sulf... Oh well, enough talking. Go out and play. I don't think your mother will have dinner ready for another hour.