chemistry

Calculate the pH of the solute in an aqueous solution of 0.0047 M codeine, if the pKa of itsconjugate acid is 8.21.
What is the percentage protonation of the solute?

  1. 👍 0
  2. 👎 0
  3. 👁 96
asked by vivian
  1. If we all codeine, C, then the hydrolysis is
    C + HOH ==> HC^+ + OH^-
    Kb = (Kw/Ka) = (OH^-)^2/(C)
    Substitute into the Kb expression and solve for OH^-, convert to pOH, then to pH.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 (one million) parts of solution. Mathematically by mass: ppm =

    asked by mel on November 3, 2007
  2. Chemistry

    An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure

    asked by S on January 24, 2012
  3. Chemistry

    The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 parts of solution. (Both solute and solution are measured using

    asked by qwerty on January 23, 2019
  4. chem

    Calculate the number of moles of solute present in each of the following solutions. a) 39.0 mg of an aqueous solution that is 1.00 m NaCl b)90.0 g of an aqueous solution that is 2.10% sucrose (C12H22O11) by mass.

    asked by Samantha on January 19, 2013
  5. chemisty lab

    determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

    asked by shaknocka on February 7, 2011
  6. chemistry

    determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

    asked by shaknocka lewis on February 8, 2011
  7. Chemistry

    Which contains more solute particles a 0.10 M aqueous solution of methanol (CH3OH) or a 0.10 M aqueous solution of table salt (NaCl)? Are we supposed to go M*L=moles*(6.022*10^23 solute particles)

    asked by Felix on November 3, 2018
  8. chemistry

    Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution coefficient for the solute between ether and water is 20, calculate the percent of the compound that can be recovered with a single

    asked by samm on November 24, 2013
  9. Chemistry

    Consider 15 mL of an aqueous solution containing 2.0 g of an organic solute. If the distribution coefficient for the solute between ether and water is 20, calculate the percent of the compound that can be recovered with a single

    asked by Anonymous on November 22, 2011
  10. Chemistry

    We have an aqueous solution that contains 22% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 215 g/mol. The density of the solution is observed to be 1.1 g/mL. What is the molarity of Z in this

    asked by El on March 28, 2016

More Similar Questions