San Dimas High School

AP CHEM 101

Perform the molar mass by titration lab from your lab kit. Complete this formal lab write up and respond to all sections in your own words. This is independent of the completed lab manual pages. The lab manual pages you will be submitting separately with all tables, graphs and the required photo/s showing your mass of KHP that you started with and the solution after the final titration. Lab Title: Titration Problem: What problem will this lab answer? It will answer what happens when preforming a titration and get a better understanding of molarity. Hypothesis Write this in an if… then statement. If the solutions are an acid and base, the solutions are mixed until the solution is neutral and neither acidic or basic. Method: Briefly describe what you did in the lab (the procedure.) Include chemicals used and any special equipment. I poured vinegar into a beaker and drew 1 ml of it. Then add distilled water to the 1 ml of vinegar and put it into wells d1 and d2. Then I put phenolphthalein indicator paper into the wells and added NaOH until the pink color stays and found the average from the two wells.