70.1 MB (4.1 MB compressed)
5700 x 4301 pixels
48.3 x 36.3 cm ⏐ 19.0 x 14.3 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Chromium (III) hydroxide precipitate. Test tube with 0.15M chromium (III) potassium sulfate solution (left frame) has a 1M solution of sodium hydroxide (NaOH) added. As a result, chromium (III) hydroxide precipitate (Cr(OH)3) is formed (right frame): KCr(SO4)2 + NaOH -> Cr(OH)3 + KNaSO4 + Na2SO4.
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