Lecture 3 Flashcards
1
Q
Acid-Base indicator DEF
A
An acid-base indicator is a weak acid or base that has a different color when it is dissociated into its ions than when it is undissociated.
2
Q
Strong acid - strong base
A
Phenolphlaein- 8-10, colourless to pink
Methyl orange- 3-5, red to yellow
3
Q
Strong acid - weak base
A
Indicators change in acidic conditions
Methyl orange- 3-5, red to yellow
4
Q
Weak acid - strong base
A
Indicator changes color in alkaline conditions
Phenolphthalein- 8-10, colorless to pink
5
Q
Weak acid - weak base
A
No suitable indicator, no sudden increase in pH at any stage.
