.... 2. Because when it is near the end point, the solution change to pink . However, when you shake well, the colour disappeare, which mean it ...
...there is excess of NaOH, the colour of phenolphthalein is pink (alkaline), and gradually as excess acid is added, it will become ...
... added to the oxalic acid solution in the conical flask. If a faint pink colour appears when the solution is not properly swirled...
...(II) ion=pale green Iron(iii)ion = yellow cobalt(ii) ion= pink Nickel(ii)ion=green chromium(iiI) ion=green chromate ion =yellow dichromate...
... CoCl2 (blue) + 6 H2O → [Co(H2O)6]Cl2 ( pink ) 如有任何錯誤，請各位指正THz~
... to the conical flask, the purple colour of the titrate will become very pale pink in the flask as it is reduced to Mn 2+. You should...
... range 8.3-10.0, the colour of the solution appears pale pink (not colourless !), and this colour shows the end point of titration...
...acid is put in the burette, the color change of the phenolphthalein is from PINK / RED to COLORLESS. If strong acid is put in the conical...
... also turns BLUE anhydrous cobalt(II) chloride paper into PINK . 2006-11-17 16:52:58 補充： Blue is the color of copper(II...
... colour of the solution changes from colourless to pale pink . On the addition of acidified KMnO4 solution, the redox reaction...