Chemical Tests and Indicators Flashcards
1
Q
methyl orange (acidic)
A
red
2
Q
methyl orange (basic)
A
yellow
3
Q
methyl orange (neutral)
A
orange
4
Q
phenolphthalein (acidic)
A
colourless
5
Q
phenolphthalein (basic)
A
pink (darker)
6
Q
phenolphthalein (neutral)
A
pale pink
7
Q
bromothymol blue (acidic)
A
yellow
8
Q
bromothymol blue (basic)
A
blue
9
Q
bromothymol blue (neutral)
A
green
10
Q
ion CO3-
A
react with acid and collect gas, gas turns limewater cloudy
11
Q
ion Ag+
A
add Cl- ions and a white precipitate forms
add Br- ions and a cream precipitate forms
add I- ions and a yellow precipitate forms
12
Q
ion NH4+
A
add NaOH and collect gas, turns litmus paper red –> blue
13
Q
ion SO4 -2
A
Ba+ ions, forms and insoluble salt
