Identifying an Unknown Weak Acid Lab In this lab you will design an experiment to determine the identity of an unknown a
Posted: Mon May 16, 2022 10:26 pm
Identifying an Unknown Weak Acid Lab In this lab you will design an experiment to determine the identity of an unknown acid using a titration Purpose: do not write this in your lab notebook until you have designed a procedure and are sure of the objectives of this experiment. Pre lab questions 1. Define and explain the difference between equivalence point and end point. 2. Which equipment is needed to determine an equivalence point vs an end point? 3. In this experiment, you must determine the equivalence point. Explain why this is necessary based on the experiment's objectives. 4. How many mL of 0.10 M NaOH are required to neutralize 15.2 mL of 0.38 M HCIO ? Show work. 5. How would your calculation in #4 above be different if the same volume and molarity acetic acid (CH,COOH) were being neutralized instead of HCI? Explain. 6. Sketch the titration curves for #4 and #5 above. Show the work for any calculations that are necessary to determine important parts of the curves... 7. 0.115 g of formic acid is titrated with 0.10 M sodium hydroxide to give the titration curve below. What are the two ways the titration curve could be used to identify the acid if its identity was unknown? Explain each, showing appropriate calculations, where applicable, Titration of HCOOH with NaOH