Suppose you are cleaning up the lab and you find a large container labeled ‘hydrochloric acid’, but the concentration is not given. A titration can be done to find the unknown concentration. Titration is a process (procedure and calculations) for determining the concentration of a substance accurately and precisely using a measurable volume of a standardized solution. A standardized solution is simply a reactant of known concentration. The standardized solution (or titrant) used to find the concentration of hydrochloric acid would be a strong base, such as NaOH solution. The volume of NaOH added to the acid solution would be measured using a skinny tube called a buret. The flask contains a measured volume of the solution of unknown concentration, in this case 10.00mL of HCl(aq), and the buret contains a standardized base, in this case 0.10M NaOH(aq). The standardized base is added from the buret to the flask. The OH- from the buret reacts with the H3O+ from the flask to produce water. This continues until the equivalence point is reached, the point at which _______________________________________________________________. At this point, what is in the flask? For a strong acid/strong base titration, such as the example we are investigating, the pH at the equivalence point is _____. How do you know when the equivalence point has been reached in an acid/base titration? An indicator is used to help visually determine when the equivalence point has been reached in an acid/base titration. The indicator changes colour at or very near the equivalence point, signaling an end to the titration. When
Suppose you are cleaning up the lab and you find a large container labeled ‘hydrochloric acid’, but the concentration is not given. A titration can be done to find the unknown concentration. Titration is a process (procedure and calculations) for determining the concentration of a substance accurately and precisely using a measurable volume of a standardized solution. A standardized solution is simply a reactant of known concentration. The standardized solution (or titrant) used to find the concentration of hydrochloric acid would be a strong base, such as NaOH solution. The volume of NaOH added to the acid solution would be measured using a skinny tube called a buret. The flask contains a measured volume of the solution of unknown concentration, in this case 10.00mL of HCl(aq), and the buret contains a standardized base, in this case 0.10M NaOH(aq). The standardized base is added from the buret to the flask. The OH- from the buret reacts with the H3O+ from the flask to produce water. This continues until the equivalence point is reached, the point at which _______________________________________________________________. At this point, what is in the flask? For a strong acid/strong base titration, such as the example we are investigating, the pH at the equivalence point is _____. How do you know when the equivalence point has been reached in an acid/base titration? An indicator is used to help visually determine when the equivalence point has been reached in an acid/base titration. The indicator changes colour at or very near the equivalence point, signaling an end to the titration. When
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