Feature: Photo of the Month Archive (1/72)


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PHOSPHORUS PENTOXIDE ACIDIFIES WATER
(2 of 5 - Variations Available)
Methyl Red Indicator with P4O10 (s) and Water
P4O10(s) is stirred into the water forming phosphoric acid (indicator shifts to red) and generating enough heat to create steam in an exothermic reaction. P4O10(s) + 6 H2O(l) --> 4 H3PO4(aq)
Copyright:© 2010 Richard Megna - Fundamental Photographs