Purpose:
The purpose of this lab was to perform a titration with HCl and NaOH to find out the concentration of the NaOH given you had a 1.5 molar solution of HCl.
Procedure:
- Fill the burette with NaOH and mark the amount it is at.
- Put 10 ml of 1.5 molar HCl in a erlenmeyer flask directly below the burette so the NaOH can drip into it.
- Put 2 drops of the phenolphthalein indicator in the solution of HCl.
- Slowly drip the NaOH into the solution until the color of the solution turns a faint pink.
- Record the amount of NaOH used.
- Repeat 2 times.
Data Table:
Trial 1 | Trial 2 | Trial 3 | |
Initial Vol. | 6.4 mL | 18.0 mL | 30.1 mL |
Final Vol. | 18.0 mL | 30.1 mL | 42.0 mL |
Change | 11.6 mL | 12.1 mL | 11.9 mL |