chemistry

posted by allison

how much 10M HNO3 must be added to 1L of a buffer that is .010M acetic acid and .10M sodium acetate to reduce the pH to 5. pKa=4.75

  1. DrBob222

    millimoles acetic acid = 1000 mL x 0.01M = 10
    mmole sodium acetate = 1000 mL x 0.1M = 100.

    5.00 = 4.74 + log(base/acid)
    base = 100-x
    acid = 10+x
    Solve for x where x = mols HNO3 added.
    Then convert to volume needed of the 10M HNO3.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Chemistry

    Starting with 1.0M acetic acid and 0.50M NaOH, how would you prepare 100ml of 0.10M acetate buffer , pH =4.50?
  2. school

    What is the pH of 0.1 M formic acid solution?
  3. chemistry

    What is the pH of a solution when 1ml of 0.10M NaOH is added to 100ml of buffer containing 0.1M acetic acid and 0.1M sodium acetate?
  4. chemistry

    How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the pH to 5.00?
  5. Chemistry

    If you need to prepare 250.0 mL of a pH 5.00 buffer that has a total buffer concentration of acetic acid + sodium acetate of 0.050M, how many moles of each will you need to prepare the solution?
  6. chemistry

    1. Calculate pH of an acetate buffer containing 27.5 mM acetic acid (pKa is 4.74) and 50 mM sodium acetate. When a 30 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.8. Calculate the amount of acetic acid …
  7. Chemistry

    Calculate pH of an acetate buffer containing 27.5 mM acetic acid (pKa is 4.74) and 50 mM sodium acetate. When a 30 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.8. Calculate the amount of acetic acid (in …
  8. chemistry

    I understand part (I) but We have only briefly gone over the HH equation in class and I understand how to use it to get the pH but I really don't understand how to use it in part (II), assuming I should be using it in this question?
  9. Chemistry

    100 mL 0.1 M sodium acetate solution is mixed with 50 mL 0.1 M acetic acid. If now 0.937 mL of 1 M sodium hydroxide is added to the buffer what is the change in pH?
  10. chemistry

    How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the pH to 5.05 help please :(

More Similar Questions