20.00 ml of a diprotic acid was titrated with 0.1000 m naoh. from the titration curve, it was determined that it took 32.54 ml to reach the second equivalence point. determine the concentration of the diprotic acid and type it in the box below

General
1

20.00 ml of a diprotic acid was titrated with 0.1000 m naoh. from the titration curve, it was determined that it took 32.54 ml to reach the second equivalence point. determine the concentration of the diprotic acid and type it in the box below.

2

What is the method to determine the concentration of a diprotic acid from a titration curve with a strong base?

Answer:
To determine the concentration of a diprotic acid from a titration curve with a strong base, we need to follow these steps:

  1. Identify the Volume at the Second Equivalence Point: In this case, the titration curve showed that it took 32.54 ml of 0.1000 M NaOH to reach the second equivalence point.

  2. Calculate the Number of Moles of NaOH: By multiplying the volume of NaOH used at the second equivalence point by its concentration, you can find the number of moles of NaOH used.

  3. Determine the Molar Ratio: Since the acid is diprotic, it requires two moles of NaOH for each mole of the acid.

  4. Calculate the Number of Moles of Acid: By dividing the moles of NaOH used by 2 (due to the 1:2 molar ratio of acid to base), you find the moles of the diprotic acid.

  5. Find the Concentration of the Diprotic Acid: Finally, by dividing the moles of the diprotic acid by the initial volume of the acid used in the titration (20.00 ml converted to liters), you can determine the concentration of the diprotic acid in mol/L.