Thursday
November 27, 2014

Homework Help: Chemistry Titration Lab HELP!

Posted by Angel on Wednesday, June 11, 2008 at 2:11pm.

Hi everyone! I just got a new lab that I MUST complete today, and it's about titration- I have absolutely no clue how to do it, it just doesn't make sense to me! I hope that someone can help explain to me how to do it so I can finish ASAP!!
Thanks a lot,
-Angel

Lab--Titrations
Questions:
Use 40 ml of KOH for your calculations.

1. Calculate the concentration of the HCl acid sample you titrated in this lab for two of the trials you ran that did not have an overshot endpoint. You will be reporting two answers. You can do your calculations on a piece of scratch paper.
Trial 1 concentration:
Trial 2 concentration:

2. Explain how you arrived at your answers.

3. Imagine that you ran a similar titration using HCl as the sample with 3.56 M KOH as the titrant. Calculate the concentration of the HCl if the sample size were 25 mL, and if the volume of the titrant used were 29.6 mL.

4. Calculate the concentration of a 50.0 mL sample of HBr acid, which was titrated with 37.7 mL of 0.57 M NaOH base.

5. Explain the difference between the equivalence point and the endpoint of a titration.

6. Explain why an overshot endpoint is not a good titration.

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