Methanol oxidation. Oxidation of a primary alcohol (methanol, CH3OH) by potassium dichromate (VI) (K2Cr2O7). In the process chromium is reduced from +6 oxidation state to +3 oxidation state. This is physically observed as a colour change from orange to green to blue. Here 0.4 mL of 0.23M solution of potassium dichromate acidified with sulfuric acid (H2SO4) was added to a test tube with 6.5 mL of methanol. The reaction rate was slow, left frame was taken at the start, centre frame - after 6 min and right frame - after 2 hours. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 7000 px × 3528 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |