Fig. 3
From: Iron acetate solution prepared from steel wool and vinegar for ebonizing wood
Reaction progress curves. Aged Rhodes steel wool (2.0 g) reactions with 170 mL DW vinegar (squares), 5 vol% acetic acid (circles), nitrogen-sparged 5 vol% acetic acid (triangles). Reactions with no added phosphate (orange and black; top line and bottom two lines), 0.10 mM phosphate added (green; 3rd line from top), and 1.0 mM phosphate added (blue; 2nd line from top and 4th line from top)