1.  Safety
2.
Objectives/Overview
3.
Procedures
4. Observations
5.
Equipment
6.

View Techniques:
Acid-Base Titration
- Preparing Burette
- H2SO4 Solutions
- Titration

7. Sample Calculations
8.

Waste Disposal/Clean-up

9. Calculations/Set-ups
10. Conclusions
11. Grading Scale
12.
Review Prelab Questions
13. Review Postlab Questions

Experiment 5
Standardization of NaOH by Titration

OBJECTIVES

An aqueous NaOH base solution (~0.3 M) will be prepared by dilution of a more concentrated base solution and then standardized (i.e. determine its concentration accurately) by titrating it against a sulfuric acid solution of known concentration (i.e. 0.5000 M).

OVERVIEW

In this experiment you will learn how to:

  • Prepare solutions by dilution utilizing the equation:
    Mi x Vi = Mf x Vf

  • Perform acid-base titrations to standardize (i.e. determine a concentration accurately) an unknown base solution. A titration involves the gradual and measured addition of a titrant from a burette to a solution with which it reacts. The endpoint is often signified by a color change of an indicator.

  • Perform solution stoichiometry calculations to determine the molarity of the unknown base solution using titration data and the balanced chemical equation for the titration:
    2NaOH + H2SO4 -> 2H2O + Na2SO4.
 
 
 
 
 
 

 

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