Back Titrations Flashcards
When do back titrations occur?
They occur when an excess of one of the reactants is added and that excess is titrated after the reaction takes place.
What is a back titration?
Analysis of a weak acid and base. This is difficult to do because the equivalence point is too broad to be determined with an indicator and the endpoint is not a close match with the equivalence point.
What is a pre reaction?
Taking the known amount of acid (standard solution) and reacting it with the known volume of the base sample which has the unknown concentration
What do you do with the remaining acid after the pre reaction?
Titrated it against a strong acid
What are you doing when your removing the excess substance from the original amount of substance?
By taking the left over substance away from the original amount of the substance and putting it in a flask that gives how much of the substance is reacted with the other substance in the titration
What do you use to calculate the amount of the substance that reacted with the other substance?
Stoichiometry
Convert to ______
Appropriate units.
