Explore BrainMass
Share

Explore BrainMass

    pH of titration

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Titration Acid/Base

    Exactly 100ml of 0.12 Molar nitrous acid (HNO2) are titrated with a 0.12 molar NaOH solution. Calculate the pH for---

    A. the initial solution

    B. the point after 80ml of the base has been added

    C. the equivalence point

    D. after 105ml of base has been added

    © BrainMass Inc. brainmass.com October 9, 2019, 8:05 pm ad1c9bdddf
    https://brainmass.com/chemistry/titration/ph-titration-138807

    Solution Preview

    Please see the attached file.

    Ka = 4.0 × 10-4 for HNO2
    titration acid/ base

    Exactly 100ml of 0.12 Molar nitrous acid (HNO2) are titrated with a 0.12 Molar NaOH solution. Calculate the pH for---

    A. the initial solution
    HNO2  NO2- + H+
    Initial Concentration 0.12 0 0
    Equilibrium, M 0.12-x x x
    Assume at the equilibrium is x M.
    Then
    So

    Or
    M.

    B. the point after 80ml of the base has been added ...

    Solution Summary

    It calculates the pH of the solution at different stages of the titration process.

    $2.19