Calculate mw of unknown using titration

  • Thread starter Thread starter kthejohnster
  • Start date Start date
  • Tags Tags
    Titration
Click For Summary
SUMMARY

The discussion focuses on calculating the molecular weight of an unknown acid through titration using 2N H2PO4 and 2N NaOH. Participants emphasize the importance of converting Normality to Molarity and utilizing the titration curve to identify inflection points, which correlate to the number of equivalents. The key equation involved is pH = pKa + log[a-]/[ha], which aids in determining the acid's dissociation characteristics. A clear procedure for determining molar mass is essential for accurate calculations.

PREREQUISITES
  • Understanding of titration principles and techniques
  • Knowledge of Normality and Molarity conversions
  • Familiarity with pH calculations and the Henderson-Hasselbalch equation
  • Experience in graphing titration curves and interpreting inflection points
NEXT STEPS
  • Research the process of converting Normality to Molarity in titration contexts
  • Study the Henderson-Hasselbalch equation in detail
  • Learn how to accurately graph titration curves and identify inflection points
  • Explore methods for determining molar mass through titration experiments
USEFUL FOR

Chemistry students, laboratory technicians, and educators involved in analytical chemistry and titration methodologies.

kthejohnster
Messages
23
Reaction score
0

Homework Statement



Calculate the molecular weight of unknown acid by titrating with 2N H2PO4 and 2N NaOH

Homework Equations



ph = pka + log[a-]/[ha]

The Attempt at a Solution



So i graphed titration with both acid and base with equivalents used vs ph, how would i use the number of equivalents (and total number of inflections in curve) to get molecular weight?
 
Physics news on Phys.org
Convert Normality to Molarity.
 
kthejohnster said:
Calculate the molecular weight of unknown acid by titrating with 2N H2PO4 and 2N NaOH

Not enough data. Please explain what the question is and what is the data that you are given. Or are you asked to design a procedure for determining molar mass of the acid?
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
Replies
7
Views
5K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 7 ·
Replies
7
Views
7K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 23 ·
Replies
23
Views
6K
  • · Replies 3 ·
Replies
3
Views
3K
Replies
6
Views
7K
  • · Replies 1 ·
Replies
1
Views
2K