Titrations

A titration is the slow addition of a know solution and its concentration to a other solution with an unknown concentration. The titration allows you to slowly add the solution until you complete a reaction and helps you determine the concentration of the unknown solution. You add an indicator into your unknown solution which helps you know when your reaction is complete. In the lab we used the titration to determine the concentration of HCl by mixing in NaOH. The end point of a titration is when the reaction is complete which you can tell when the unknown solution with the indicator starts to change colours. The endpoint of the titration can be determined by the change of color, the indicator in the solution turns pink but to know its balanced you want to achieve a very faint light pink. For the lab me and my partner were able to achieve a faint light pink 3 of the 4 attempts. We found that our 1st attempt and 4th attempt agreed with each other by 0.1. We found our average volume oh NaOH used was 13.58ml+-0.2ml. We determined the HCL 0.00136M.

Core competency reflection

critical and reflective thinking

when doing this lab I used critical and reflective thinking. Doing titrations are very specific and it was critical to put the right amount of solution in order to get the reaction we wanted. I was critical as we added drops of the solution, taking our time between each drop and when we had a bad reaction we reflected on what we could have done better and applied it to our next trial.