Curricular Competency Explenation

What is a Titration?

With the help of special a technique, Titration, we can determine the concentration of an unknown solution. For this we use the data of the known solution (titrant), which is usually added from a buret to a known quantity of the analyte (unknown solution). To see if the reaction is complete or neutralized we often use phenolphthalein as an indicator, which leads to change of colour.

What is the titration used for in this lab?

Its purpose is to find out the unknown concentration of a hydrochloric acid solution by comparing it with the moles of sodium hydroxide. Because if we know the number of moles of sodium hydroxide, we can figure out the moles of hydrochloric acid and calculate its molarity.

What is the endpoint (or equivalence point)of a titration?

The equivalence point for an acid-base titration is the point at which a certain amount of acid has been neutralized with the corresponding amount of base.

How do you know that you have reached the endpoint of titration?

To determine the equivalence point, you have to add step by step the measurement solution that chemically converts your test solution. If you have added so much measure solution that your test solution has been completely chemically converted, you have reached the equivalence point.

What was your result?

We used 0.0006571 mol hydrochloric acid. The Molarity we calculated was 0.0657 mol/l.

Core Competency Reflection

Communication

Communication was really important to me and what helped me a lot during the lab. I think Jiwoo and I are a pretty good team, because we always share our notes or listen to each other if someone has an idea to improve the efficiency of the lab. And with the help of communication we divided the tasks fairly, tried to explain it to one another if we weren’t sure. Especially in this lab we shared a lot of thoughts and talked about how to proceed with the lab. But I didn’t only use the communication skills with my lab partner, also with people on the same table or this class. We all have the same goal, to make this lab work, that’s why I like that we help each other and share information.