🧪Topic Summary
Titration is a laboratory technique used to determine the concentration of a solution (analyte) by reacting it with a solution of known concentration (titrant). The titrant is added until the reaction is complete, which is usually indicated by a color change or a significant change in a measured property, such as pH. Titration calculations involve using stoichiometry and the known concentration and volume of the titrant to calculate the unknown concentration of the analyte. The key equation used is often based on the balanced chemical equation for the reaction between the titrant and the analyte.
🗂️ Part A: Vocabulary
Match the term with its correct definition:
| Term |
Definition |
| 1. Analyte |
A. The point in a titration where the reaction is complete. |
| 2. Titrant |
B. A substance used to indicate the endpoint of a titration, usually by a color change. |
| 3. Equivalence Point |
C. A solution of known concentration. |
| 4. Indicator |
D. The solution being analyzed, whose concentration is unknown. |
| 5. Standard Solution |
E. The solution of known concentration that is added to the analyte. |
Match the correct letters (A-E) to the numbers (1-5).
✍️ Part B: Fill in the Blanks
Complete the following paragraph using the words provided:
(concentration, moles, volume, stoichiometry, titration)
In a __________, the reaction between the titrant and the analyte is governed by the principles of __________. By knowing the __________ of the titrant used and its __________, we can calculate the __________ of the analyte in the solution.
🤔 Part C: Critical Thinking
A student performs a titration of a weak acid with a strong base but forgets to standardize their NaOH solution. How will this affect the calculated concentration of the weak acid, and why?