Curricular Competency Explanation

Lab 20c included a type of technique called titration. A titration is a method used to find the particular concentration of a solute in a solution. It is a process used to find out how much solute is being used. For this lab, trituration was used to neutralize the solution by adding very carefully selected drops of the NaOH solution into the flask. The endpoint of a titration is when the color of the flask changes based on the indicator (phenolphthalein) which would turn a shade of pink when the base comes into contact with the acid. The finished result of the lab is when the HCL solution is a very light pink color, remaining for 30 seconds. We could tell that we had completed the lab when swirling the flask, and the light pink color stayed for thirty seconds. The initial volume was 0.01 ml +/- 0.05 ml the final was 14.1ml +/- 0.05ml. pictures down bellow

Core competency refection ( Thinking )

While performing this lab, it was a struggle to do all the techniques in order to get the stamp. In addition to the titration, we also had to complete a couple of skills tests in order to pass the lab. One involved using a pipette and being precise in both our handling and solution measurement. It was a real struggle to get the measurement right on point, as my thumb at that point was numb from forcefully plunging up the pipet using a suction bulb. The correct handling of full and half drips from our barrette to our flask wasn’t as stressful, but it did take a couple of tries to master the second skill set. The third involved washing out the edge of our flask with water and adding our drops at the conclusion of our titration. These skills really made me think about how we could complete this point of the lab.