indicators Flashcards
1
Q
what is phenolphthalein used for
A
strong base + weak acid titration
2
Q
what is the indicating range for phenolphthalein
A
8.3 - 10
3
Q
what are the colours of phenolphthalein
A
<8.3 = colourless
> 10 = pink
4
Q
what is methyl orange used for
A
strong acid + weak base
5
Q
what is the indicating range for methyl orange
A
3.2 - 4.4
6
Q
what are the colours of methyl orange
A
<3.2 = red
>4.4 = yellow
7
Q
What is the indicating range for bromothymol blue
A
6 - 7.6
8
Q
what are the colours of bromo thymol blue
A
< 6 = yellow
> 7.6 = blue
