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When Fluorapatite (Ca5(PO4)3F ) is reacted with H2SO4.

Posted: Sat Mar 31, 2018 8:13 am
by Jake
When Fluorapatite (Ca5(PO4)3F ) is reacted with H2SO4 one of the products is H4P2O7 what other products should I expect?
The context is the surface of Venus and how the apatite crystals in the basalts react with the sulfuric acid rain. So 9 atms and 900 degrees Celsius and supercritical CO2 might be involved.
Although the regular reaction would give me insight.

Posted: Sun Apr 01, 2018 3:27 am
by ChenBeier
The other products are CaSO4 and HF ad water.

2 (Ca5(PO4)3F ) + 10H2SO4 => 10 CaSO4 + 3 H4P2O7 + 2 HF + 3 H2O

Posted: Mon Apr 02, 2018 4:24 am
by Jake
Plaster of Paris and Hydrofluoric acid?
Thank you for the answer.

Posted: Mon Apr 02, 2018 4:27 am
by ChenBeier
Gypsum it is also called.