Titration is a common method used in laboratories to find the concentration of different substances, and it involves a substance with known molarity and the other with unknown molarity. For this lab, the titration method was used to find the concentration of an acid (HCl) by slowly adding a base (NaOH) to the solution until there was enough base to neutralize the acid. When the acid and the base becomes neutralized, this could be called a neutralization reaction or an end point. It was possible to identify exactly when the end point was reached in the solution due to phenolphthalein, an indicator, which turns faintly pink when a neutralization reaction occurs. At the end of my experiment, the average volume of NaOH used during the reaction was 10.47mL, and the concentration of the HCl was 0.105M.

Reflection: communication

I was able to be an active listener when my teacher was explaining the steps for the lab by carefully listening to her instructions and noting them in an organized way so that I won’t be completely lost when doing the actual lab, (although I did get stuck a little bit on a few steps during the first trial of the lab). I was also able to communicate with my partner to complete the lab without any mistakes. For example, when one of us wasn’t fully sure of some of the steps in the lab, we could ask each other to check our work to ensure that we would be doing the lab correctly.