49.2 MB (3.7 MB compressed)
3395 x 5065 pixels
28.7 x 42.9 cm ⏐ 11.3 x 16.9 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Red cabbage juice indicator. Red cabbage juice was added to three test tubes containing solutions with varying pH values, left to right: acidic (0.1M hydrochloric acid), pH=1; neutral (buffer solution), pH=7; alkaline (0.1M sodium hydroxide), pH=13. Red cabbage juice changes its colour depending on the pH of the solution.
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