37.0 MB (4.6 MB compressed)
5877 x 2200 pixels
49.8 x 18.5 cm ⏐ 19.6 x 7.3 in (300dpi)
GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Displacement reaction, magnesium. Magnesium coil was added to a test tube containing a 0.2M copper (II) sulfate solution. Since magnesium is more reactive than copper, a single-displacement reaction occurred. Copper metal and magnesium sulfate formed as a result: Mg + CuSO4 -> Cu + MgSO4. In this sequence the frames were taken, left to right: seconds after the coil was added; after about 1 min; after about 6.5 min; after about 1 hour. Note hydrogen gas bubbles that were produced in a secondary reaction.
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