DSE化學 離子及指示劑顏色表 集合


列哂所有 DSE 範圍內既離子顏色,基本上要考 Lv5 以上既同學,入考場之前你要背到滾瓜爛熟。





Indicator


H+
H2O
OH-
Methyl orange
red
orange
yellow
phenolphthalein
colorless
Pink
red
Universal indicator
red
Green
blue




Common Ion

Fe2+
green
Cr2O72-
orange
MnO4-
purple
Fe3+
Yellow brown
Cr3+
green
Mn2+
Pale pink/ colourless
Cu+
colorless
CrO42-
yellow
MnO-
Dark green
Cu2+
blue


MnO-
purple
Ni2+
green


Mn3+
red




Common Gas and Liquid

I2
brown
Br2
Yellow brown
I2
(in organic solvent)

purple
Br2
(in organic solvent)
orange
NO
colourless
SO2
colourless
NO2
brown





Transition metal ion

V3+
green
Sc3+
colourless
V2+
purple
Ti3+
purple
VO2+
blue
Co2+
pink
VO2+
Yellow