Acid- Base Titration
Jorge Moreno Chem 118LS4-133S Mr. Qin
Purpose In the lab they want determine the concentration of a solution. One way that they have to do so is to carrying out analytical procedure known as titration.
Introduction Every material and step in the lab is very important. Everything has a purpose in the lab. In this lab they used a lot material. They used 2 50mL burets, buret stand and clamps, …show more content…
Then they wrote the initial and the final volumes from the buret into your data table. 8. Next they added 10mL of distilled water to the flask. 9. Then they added 3 drops of phenolphthalein to the flask, and swirl the flask to mix thoroughly. 10. Then they started to move the flask, next observed the substance until the substance until the substance changes his color. 11. They began the titration by added NaOH to the flask. For the initial trial they may want to add the base fairly quickly until they notice a pink colour appearing in the flask. Swirling the flask should make the pink colour disappear. At that point they began added the NaOH more slowly, swirling the flask after each drop is added. 12. Then they repeat the titration a couple of time more.
Data and Results
Table 1: Titration of NaOH | Trial 1 | Trial 2 | Trial 2 | | | HCl NaOH | HCl NaOH | HCl NaOH | | Initial Volume | 1.48ml | 9.25mL | 17.40mL | | Final Volume | 9.25mL | 17.10mL | 25.20mL | | Volume used | 7.77mL 10mL | 17.85mL 10mL | 7.8mL 10mL | |
Table 2: titration of vinegar | Trial 1 | Trial 2 | Trial 3