indicators Flashcards
1
Q
phenolpthalein colour change
A
coulourless in acid and pink in base
2
Q
Bromothymol blue colour change
A
yellow in acid and blue in alkali
3
Q
litmus colour change
A
red in acid blue in alkali
4
Q
mythyl orange coloud change
A
red in acid and orange in alkali
5
Q
when does phenolpthalein change colour
A
pH 8.3-10.0
6
Q
when does bromothymol blue change colour
A
pH 6.0-7.5
7
Q
when does litmus change colour
A
pH 4.0-6.5
8
Q
when does methyl orange change colour
A
pH3.2-4.4
