SAC re Sit Flashcards
(6 cards)
1
Q
Define Aliquot
A
An extract of standard solution with known concentration.
2
Q
Define concordat titre
A
Three titres that are within 0.1ml of eachother.
3
Q
What criteria must be met for a substance to be a suitable primary solution?
A
Readily obtainable in pure form.
Have a known formula.
Be able to store without deteriorating or reacting.
4
Q
Identify possible sources of error that could have occurred in the standard solution.
A
Overfilled with deionised water.
Under filled with demonised water.
5
Q
Why does the solution need to be swirled?
A
So that the acid is distributed equally.
6
Q
State what a secondary solution is.
A
A solution that has had its concentration found by titration against a primary/secondary solution.
