1) If I perform a titration with a buret not rinsed in the titrant, then how will the pH of the endpoint be affected?
2) Also, if the volumetric pipet used to measure the analyte is not rinsed with the analyte, how will that affect the pH of the endpoint?
The Attempt at a Solution
I assume that I can analyze the changes in pH of the equivalence points and because endpoints approximate equivalence, the pH of the endpoint should be close.
for question 1: I will have diluted titrant, requiring a greater volume to reach equivalence. if this is a strong acid/strong base titration, then my pH will be 7 as all of the H+ and OH- are neutralized. If this is a titration involving a weak acid/base and a strong titrant [where if the analyte is a base, titrant is an acid and vice versa], then my volume in the flask at the endpoint will be larger due to a larger volume of the titrant added, and will affect the pH accordingly. The question is whether my guess at this is right, and if so, how will the pH be affected?
for question 2: I will have diluted analyte, requiring lesser volume to reach equivalence. if this is a strong-strong titration, then pH will be approximately 7 at the endpoint. However, if this is not the case, then there will be less volume in the flask at the endpoint. I guess this will affect pH accordingly, but the question is how.
Any input is valued. Thanks in advance for your help!