Artifact

For this reflection, the artifact I chose from the Acid-Base Titration Lab is my solution made from NaOH and HCl. In this lab, me and my partner Bella titrated an unknown concentration of hydrochloric acid using 0.100 M of NaOH to determine the molarity of the acid.

Curricular Competency Reflection

A titration is a lab technique that is used to find the concentration of an unknown solution by slowly adding a solution of known concentration until a chemical reaction is complete. In this lab we used titration to find the concentration of HCl by reacting it with NaOH solution. The endpoint is when enough base has been added to fully neutralize the acid and we knew we had reached the endpoint then the indicator we added changed colour for at least 30 seconds to a very light pink colour. This showed us that all the acid had reacted. our average volume of NaOH used was 14.44 mL which we used to calculate the moles of NaOH and HCl. From this we found the molarity of HCl to be 0.144 M. Our trials were consistent towards the end and our final results showed good accuracy and technique.

Core Competency Reflection: Communication

In this lab, it really showed how important communication is in chemistry group work. Bella and I had to stay focused and talk clearly through every step of the lab. We made sure to double check each others burette readings ands helped each other know when to slow down to drops so we didn’t overshoot and go past the endpoint. Additionally, we worked together partially on calculations, such as finding the average volume and moles, and made sure our answers matched before writing anything down. We were both patient and open to eachothers ideas, and made decisions together as a team. If we hadn’t communicated well, the lab could have easily gone off track or given us bad, inaccurate results. One thing we could definitely improve on is being a bit more organized when recording data such as assigning roles like one person calls out numbers while the other writes. This would help us be more efficient with our time and stay more accurate by making sure one person always has eyes on the lab. Overall, me and Bella worked well as a team and communicated clearly to get solid results from our lab.