Quote:
Originally Posted by sjastro
Thanks Andrew.
There is a mild reaction when battery acid is added to the rock, nothing like a violent effervescent reaction once would expect if it was limestone however.
I have taken some microscope shots of the rock.
These might prove useful.
Regards
Steven
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The reaction of limestone and acid is not that violent. I think it's to do with the limited surface area (compared to a powder) and the presence of clays etc in the limestone.
Last week a tech from Chemistry asked me for some limestone for a first year chem prac. They needed a steady stream of CO2 and were finding that powdered CaCO3 (or Na2CO3 - I'm not sure) was producing the CO2 too fast and then was all consumed. I found him some calcite and some coral (diagenetically altered and infilled) which apparently worked OK.