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ACID RAIN DAMAGE TO STATUE OF WASHINGTON - AFTER<br />
(2 of 2)<br />
Washington as Commander-In-Chief<br />
Washington Square Arch, Washington Square Park, June 1994.  <br />
SO2 combines with atmospheric moisture (H20), yielding acid rain, or sulfuric acid (H2SO4). CaCO3 in limestone statuary dilutes the sulfuric acid to form calcium sulfate, corroding the stone.

Fphoto-36889406-2KBd.jpg

ACID RAIN DAMAGE TO STATUE OF WASHINGTON - AFTER
(2 of 2)
Washington as Commander-In-Chief
Washington Square Arch, Washington Square Park, June 1994.
SO2 combines with atmospheric moisture (H20), yielding acid rain, or sulfuric acid (H2SO4). CaCO3 in limestone statuary dilutes the sulfuric acid to form calcium sulfate, corroding the stone.

Copyright:© 1994 Kristen Brochmann - Fundamental Photographs

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