On a lab exam, you have to find the concentrations of themonoprotic (one proton

Question

On a lab exam, you have to find the concentrations of themonoprotic (one proton per molecule) acids HA and HB. You aregiven 43mL of HA solution in one flask. A second flaskcontains 33.6mL of HA, and you add enough HB solution to it toreach a final volume of 50mL. You titrate the first HAsolution with 93.8mL of .0906M NaOH and the mixture of HA and HB inthe second flask with 92.6mL of the NaOH solution. Calculatethe molarity of the HA and HB solutions. -ok so I got the molarity of HA to be .198M but I can't seemto get molarity of the HB solution right On a lab exam, you have to find the concentrations of themonoprotic (one proton per molecule) acids HA and HB. You aregiven 43mL of HA solution in one flask. A second flaskcontains 33.6mL of HA, and you add enough HB solution to it toreach a final volume of 50mL. You titrate the first HAsolution with 93.8mL of .0906M NaOH and the mixture of HA and HB inthe second flask with 92.6mL of the NaOH solution. Calculatethe molarity of the HA and HB solutions. -ok so I got the molarity of HA to be .198M but I can't seemto get molarity of the HB solution right

Explanation / Answer

Molarity of HA = 0.198 M

In the second flask, we have 33.6 mL of HA and the remaining (50- 33.6) = 16.4 mL of HB.

The titration of this second flask requires 92.6 mL of 0.0906 MNaOH

Let us first calculate how much volume of NaOH is consumed by33.6 mL of HA

Related Questions

Navigate

• Browse (All)
• Browse O
• Subjects

---

---

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