Acid Base Titration: Calculating Absolute Error

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Discussion Overview

The discussion revolves around the calculation of absolute error in the context of an acid-base titration lab report. Participants explore issues related to measurement accuracy, grading fairness, and the expectations for precision in titration results.

Discussion Character

  • Homework-related
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant seeks guidance on calculating the absolute error of acidic concentration in their lab report.
  • Another participant requests additional details about the measurements and formulas used to derive the acidic concentration.
  • A participant expresses concern about the grading policy, noting that small discrepancies in measurements (e.g., 0.1 mL) lead to significant penalties on their report grade.
  • Some participants question the fairness of the grading system, particularly regarding the impact of minor measurement errors on overall performance.
  • It is suggested that achieving an accuracy of 0.1 mL in titration is reasonable with careful work.
  • One participant expresses a willingness to learn from mistakes while advocating for fairness in grading practices.

Areas of Agreement / Disagreement

Participants express differing views on the fairness of grading based on small measurement errors, indicating that multiple competing perspectives remain on this issue.

Contextual Notes

There are unresolved assumptions regarding the grading criteria and the expected precision in titration measurements, as well as the implications of small errors on overall grades.

queenstudy
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i am doing my lab report and i just want to know how to calculate the absolute error of the acidic concentration and thank you.
 
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Hi queenstudy! :smile:

Can you give us a little more to work with...?
What did you measure?
Which formula(s) did you use to calculate the acidic concentration from your measurements?
 
thank you serena but fixed my problem , but i just want to know something , why if i have a value different from the professor for every 0.1 ml my report grade decreases more and more its really unfair
 
Umm... how is this unfair?
 
if makes a huge difference , like 1 to 2 ml okay but 0.5ml will make youfail in the report i don't know is it a bit harsh?
 
I'm sorry about your grade. :frown:

But I believe you can do a titration accurately to 1 drop, which is about 0.03 mL.
Shouldn't an accuracy of 0.1 mL be achievable if you work carefully?
 
i really don't know its okay i love to learn my mistakes but also be fair hehehe thank you very much serena
 

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