I am doing a lab in chemistry where we have to find out what the unknown acid is

Question

I am doing a lab in chemistry where we have to find out what the unknown acid is by using an indicator and titration. I have the titration curve of volume vs ph, my equivalence point was 7.15. Which I matched to the indicator Bromthymol Blue. After that I addded the indicator to the unknown acid. And titrated it used NaOH to reach a final volume of 31.1 mL when it was titrated. We have to use Henderson-Hasslebach's equation to find out what the Ka value is so we can match it to a list of Acids to figure out which one it is. Can you help me please?

Explanation / Answer

In general, Henderson-Hasslebach's equation is use for finding pH of acidic or basic buffer formation reaction.

In your reaction also there is formation of salt. you have to know the concentration or mole of NaOH and mole concentration of unkown acid, then you able to find pKa value of acid.

Then obtained pKa value was correlate with table and find out the unknown acid.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.