Video Artifact shown in person.
Curricular Competency Explanation:
A tititration is the process or laboratory technique we used to determine the concentration of different matter. In Acid-Base labs like the one we completed, we used a titration process to balance NaOH and HCl, together these solutions balanced to make water. The equivalence point is when the moles of NaOH (the base) is equal to the moles of HCl (the acid) another word for this is neutralization. We know when the solutions have neutralized and reached the equivalence point by putting a phenolphthaline solution in the erlenmeyer flask which is the flask used to mix both solutions in. Phenolphthalein is a solution that indicates when a solution begins to have a basic state by turning pink coloured. When the solutions have just neutralized/reached the equivalence point the solution stays a pink tint for 30 seconds. Small amounts of base (NaOH) being added to the flask lets us have a more accurate measurement of when the solutions neutralize and this is possible due to the buret. After completing the process our concentration of HCl was calculated to be 0.1449M.
Core Competency Reflection: #ThinkingCC
The Acid-Base titration lab required different creative and critical thinking. An example of creative thinking was dividing each roles to make sure they could be properly done while also making sure the each of us got to try every step. For example after one of us found adding the base to be quite difficult by ourself we got the other partner to hold the flask to mix the solution and rinse excess base down with distilled water, this made controlling each droplet easier. Critical thinking was used when comparing each trial and deciding which trial had the most accurate results. We also used critical thinking when deciding a trial had gone badly and that we needed to restart.