Titration

Question 1

What is a titration?

Answer 1

Systematically adding small amounts of one standard substance to another unknown substance to measure something

Question 2

What is the equivalence point?

Answer 2

The point at which exactly equal amount of the standard has been added to completely react

Question 3

What is half equivalence point?

Answer 3

Point at which reaction is exactly half complete -> pKa = pH has the conjugate base and acid are in equal amounts

Question 4

What is the end point of a titration?

Answer 4

When we believe the reaction is complete i.e. we have reached the equivalence point as seen experimentally
-> in theory this should be the equivalence point

Question 5

How do you work out the pKa of an acid from the titration curve?

Answer 5

Find equivalence point -> find half equivalence point -> pH at this point = pKa

Question 6

How do you work out pH at equivalence point?

Answer 6

Average pKa for the amphoteric species