Acid-Base Titration Lab

Initial Volume of NaOH: 0.04mL

Final Volume of NaOH: 14.35mL

Volume Used of NaOH: 14.31mL

Curricular Competency Explanation

A titration is the procedure that we used to find the concentration of a solution. During this lab we used a titration to neutralize the soultions of NaOH and HCl. NaOH being the base and HCl being the acid. When mixing these solutions we make water. The equivalent point of the reaction of NaOH and HCl was 14.355mL. We figured this out by placing 3 small drops of phenolphthalein in the erlenmeyer flask to be an indicator to see when we neutralized the acid and the base. After doing a couple small half drops we swished around the solution in the erlenmeyer flask and the solution turned slightly pink and that is when we knew when to stop. We got this 14.355mL by taking the two volumes of the NaOH and we averaged it out. After the procedure we were able to find the concentration of the HCl by changing the mL to L and multiplying it by the molarity to find the amount of moles of NaOH it took to neutralize the solution. After this we changed the the moles of NaOH to moles of HCl and from there we just needed to calculate the concentration by dividing the amount of moles by 0.0100L which was the amount of HCl used. That is how we figured out that the concentration of the HCl was 0.14355M.

Core Competency Reflection #ThinkingCC

I used creative thinking by writing down my own notes on the lab of the procedure and they helped me to complete the lab. Another way I used creative thinking was by reflecting on what I could’ve done better and what mistakes I did. For example I would use a funnel next time I pour the NaOH into the buret to get more accurate numbers. I used critical and reflective thinking by doing the procedure multiple times to get the perfect numbers. I also, used feedback given from my teacher to change how I did the procedure to be more accurate and record the data I needed.

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