ABE Flashcards
1
Q
How do you explain the suitability of an indicator for a titration?
A
The pH transition range (________) of the indicator lies within the sharp pH change (_______) over the equivalence point.
2
Q
What is the pH transition range of methyl orange?
A
around 3.2-4.4
3
Q
What is the pH transition range of methyl red?
A
around 4.5-6.5
4
Q
When will the maximum buffering capacity occur for a titration of weak base against strong acid?
A
at half Veq
5
Q
When will the maximum buffering capacity occur for a titration of strong base against weak acid?
A
at 2xVeq
6
Q
Using the Bronsted-Lowry theory, explain what is meant by the term ‘weak base’.
A
A weak base is a proton acceptor that partially dissociates in water.
