Testing for carbon dioxide. Apparatus used to test for the production of carbon dioxide by fermenting yeast. The yeast is placed in a test tube (right) with sugar so that it begins to ferment. The gas produced by the fermentation passes out of the tube in the bung (red) and passes into a test tube containing lime water (calcium hydroxide solution,centre). Carbon dioxide (CO2) passed into limewater produces a milky suspension of calcium carbonate. When yeast ferments it converts sugar to carbon dioxide and alcohol. Therefore the lime water turns milky | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Trevor Clifford Photography |
Bildgröße: | 5125 px × 3431 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |