50.5 MB (2.9 MB compressed)
3424 x 5154 pixels
29.0 x 43.7 cm ⏐ 11.4 x 17.2 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Adding sulfuric acid to water, 3 of 4. Sulfuric acid (H2SO4), 0.1 M concentration, is poured into a beaker that contains water with few drops of universal indicator added. Initially water is green (neutral), then it progressively turns red as the solution becomes acidic throughout the volume.
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