Titration of Acids and Bases - Scott Buzby - home酸和碱-史葛芭兹比-家居滴定.ppt

Titration of Acids and Bases - Scott Buzby - home：酸和碱-史葛芭兹比-家居滴定
Acid-base titration
An acid-base titration is the determination of the concentration of an acid or base by exactly neutralizing the acid/base with an acid or base of known concentration
This allows for quantitative analysis of the concentration of an unknown acid or base solution
It makes use of the neutralization reaction that occurs between acids and bases and the knowledge of how acids and bases will react if their formulas are known
Procedure (Pg. 218)
The burette should be rinsed with the standard solution and an Erlenmeyer flask with distilled water
Add a known volume of the unknown to the Erlenmeyer flask, along with a small amount of the indicator chosen
The known solution should then be allowed out of the burette, into the conical flask. At this stage we want a rough estimate of the amount of this solution it took to neutralize the unknown solution
Three more titrations should be performed, this time more accurately, taking into account roughly where the end point will occur. The readings on the burette at the end point should be recorded, and averaged to give a final result. The end point is reached when the indicator just changes color permanently
Calculations
Molarity
Molarity of Unknown
% KHP in Sample
Standard Deviation
The standard deviation of a statistical population, a data se