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... colour of the solution changes from colourless to pale pink. On the addition of acidified KMnO4 solution, the redox reaction...
(1) The brownish-yellow solution changes to pale green. Fe3+(aq) + e- → Fe2+(aq) (2) The pH of sodium...
...the brown nitrogen dioxide gas, and thus the colour of the mixture becomes paler .
...the pH range 8.3-10.0, the colour of the solution appears pale pink (not colourless !), and this colour shows the end point...
...取決於其離子的顏色， 而日常的離子當中只有少數有顏色。 如： Fe2+ Pale green Fe3+ Yellow (Reddish Brown in Na...
...紫 royal purple 鮮紫 violet light 深紫 modena 淺紫 grey violet 淡紫 pale purple ;lavender 淡白紫 violet ash 青蓮 heliotrope 雪青 lilac 墨絳紅 purple black...
... by the increse in pressure, a large part of brown NO2 convert to pale yellow N2O4, hence the colour of the gas lightened.
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