chemistry

posted by .

In a 1.070 M aqueous solution of a monoprotic acid, 4.81% of the acid is ionized. What is the value of its Ka?

  • chemistry -

    ........HA ==> H^+ + A^-
    Ka = (H^+)(A^-)/(HA)
    This tells you that the 1.070 HA ionized 4.81% which means
    (H^) = 1.070 x 0.0481 = ?
    (A^-) = same as (H^+).
    (HA) = [1.070 - (H^+)]

    Substitute these values into the Ka expression and solve for Ka.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A 0.040M solution of a monoprotic acid is 14% ionized. Calculate the Ka for the weak acid. ---------------- so: HX <---> H+ + X- Ka= [H+][X-]/ [HX] Since its a monoprotic acis i know the concentration of H and X will be equal …
  2. Chemistry

    A 0.490 M solution of an unknown monoprotic weak acid, HA, is 2.80% ionized. What is the value of Ka for HA?
  3. Chemistry

    In a 1.760 M aqueous solution of a monoprotic acid, 3.21% of the acid is ionized. What is the value of it's Ka?
  4. Chemistry

    The pH of a 0.010 M aqueous solution of a weak monoprotic acid, HX, is 4.5. What is the value of the acid ionization constant?
  5. Chemistry

    What volume of 0.200M of aqueous solution of formic acid, a weak monoprotic acid (KA = 1.78x10-4) and 0.200M aqueous solution of NaOH would you mix to prepare a 500mL of a buffer solution of pH = 4.0.
  6. Chemistry 104

    A 0.30M solution of a weak monoprotic acid is 0.41% ionized. what is the acid-ionization constant, Ka for this acid?
  7. Grade 12 Chemistry

    This is my question: AspirinTM (acetylsalicylic acid) is a monoprotic acid with molar mass of 180g/mol. An aqueous solution containing 3.3 g/L has a pH of 2.62. What percentage of acetylsalicylic acid molecules ionizes in the solution?
  8. Chemistry

    What is the PH of an aqueous solution consisting of 0.070 M formic acid (HCOOH) and 0.070 M sodium formate (HCOONa)?
  9. Chemistry

    An aqueous solution of a monoprotic acid is prepared. This acid is known to have a pKa of 8.6. If the acid is 37.5% ionized when in solution, what is the pH of the solution?
  10. Chem

    A 0.649 m aqueous solution of a monoprotic acid (HA) freezes at -2.34°C. Find the pKa of this monoprotic acid. Kf of water = 1.86 °C/m

More Similar Questions