Chemistry

posted by .

Briefly outline a procedure you could use to determine the HC2H3O2 concentration in a vinegar sample.

What would the pH be at the equivalence point of the titration? Briefly explain

  • Chemistry -

    You could titrate a sample of vinegar with a known standard of NaOH. You can look up the details of a titration. The pH at the equivalence point is determined by the hydrolysis of the salt, in this case, acetate (C2H3O2^-).
    ......Ac^- + HOH ==> HAc + OH^-
    Kb for Ac^- (Kw/Ka for HAc) = (HAC)(OH^-)/(Ac^-).
    For weak acid/strong base titrations the pH at the equivalence point is approximately 8.7 for a salt concn of 0.05M.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    According to the experiment procedure, given that the NaOH solution has a concentration of 0.100M, and that the vinegar (acetic acid) has a concentration of 5.0% m/m (mass percent), what volume (mL) of titrant would be required to …
  2. Chemistry

    According to the experiment procedure, given that the NaOH solution has a concentration of 0.100M, and that the vinegar (acetic acid) has a concentration of 5.0%m/m (mass percent), what volume(mL) of titrant would be required to reach …
  3. chemistry

    3.30 mL of vinegar needs 43.0 mL of 0.150 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.70 qt sample of this vinegar?
  4. Chemistry

    3.30 mL of vinegar needs 40.0 mL of 0.150M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10 qt sample of this vinegar?
  5. Chemistry

    According to the experiment procedure, given that the NaOH solution has a concentration of 0.100M, and that the vinegar (acetic acid) has a concentration of 5.0%m/m (mass percent), what volume(mL) of titrant would be required to reach …
  6. chemistry

    10 ml sample of vinegar an aqueous solution 0f acetic acid( HC2H3O2) is titrated with 0.5062 M and 16.58 ml is required to reach equivalence point what is the molarity of the acetic acid b. if the density of vinegar is 1.006 g/cm3 …
  7. Chemistry

    Assuming that the lab procedure was conducted in an identical manner in all other respects, if a large quantity of vinegar had been taken initially for analysis, for example, a 50.0 ml instead of 25.0mL discuss briefly how each of …
  8. Chemistry

    Assuming that the lab procedure was conducted in an identical manner in all other respects, if a large quantity of vinegar had been taken initially for analysis, for example, a 50.0mL instead of 25.0 mL discuss briefly how each of …
  9. chemistry

    If 3.15 mL of vinegar needs 42.5 mL of 0.115 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.40 qt sample of this vinegar?
  10. Chemistry

    The data below was collected while performing a titration of acetic acid (in vinegar) to determine its concentration using sodium hydroxide. 150 ml of vinegar with unknown molarity 45.5 ml of .5 M NaOH was added to reach equivalence …

More Similar Questions