20ml sample of .200M HBr is titrated w/ .200M NaOH. what is the ph after adding 15ml (base)?

  1. 👍 0
  2. 👎 0
  3. 👁 301
  1. HBr + NaOH ==> NaBr + HOH

    Calculate mols HBr.
    mols HBr = M x L = ??
    Calculate mols NaOH used = M x L.

    Subtract mols of one from mol of the other. The one in excess will give you the H^+ if it is HBr or OH^- if it is NaOH.
    Then pH = -log(H^+) OR
    pOH = -log(OH^-)

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Please Check My Work: College Physics

    Determine the minimum angle at which a roadbed should be banked so that a car traveling at 20 m/s can safely negotiate the curve if the radius of the curve is 200m. * Data: v=20 m/s r=200m *Formula TAN(theta)=v^2/rg *Solution

    asked by Jose Luis on December 3, 2015
  2. Chem

    How much water must be added to 500.mL of .200M HCL to produce a .150M solution? (.500mL x .200M)/.150M = .667mL Correct? A chemistry student needs 125mL f .150M NaOH solution for her experiment, but the only solution avail. is

    asked by Chopsticks on May 1, 2009
  3. chemistry

    Describe how you would make 500.0mL of a 0.200M NaOH solution from a 15.0 stock NaOH conentration

    asked by Monique on November 6, 2011
  4. Chemistry

    1-A sample of potassium hydrogen oxalate, KHC2O4, weighing 0.717 g, was dissolved in water and titrated with 18.47 mL of an NaOH solution. Calculate the molarity of the NaOH solution. 2-A 35 mL drinking water sample, whose pH is

    asked by Hiba on June 11, 2020
  5. chemistry

    A 35.0 ml sample of 0.225 M HBr was titrated with 42.3 ml of KOH. What is the concentration of the KOH?

    asked by Anonymous on December 5, 2011
  1. chemistry

    25.0g of 5.0% (by mass) acetic acid solution are titrated with 0.300 M NaOH. What volume of NaOH will be needed to neutralize this sample?

    asked by Cynthia on May 28, 2010
  2. Chem 2

    5 drops of 0.10M NaOH were added to 20mL of the buffer problem, the pHwent from 3.40 to 3.43. Write a net ionic equiation to explain why the pH did not go up to about 10, as it would have if that amount of NaOH were added to

    asked by Debbie on March 6, 2012
  3. chemistry

    When 25ml of 0.10 mol/l HBr is titrated with 0.10 mol/l NaOH, what is the pH at the equivalence point?

    asked by Adeola on June 15, 2010
  4. general chemistry

    A student needs to determine by titration with NaOH the precise %KHP in an unknown sample that is thought to contain approximately 50%KHP. Approximately what mass of sample should the student use in order to use about 20mL of

    asked by Rosie on October 17, 2010
  5. chemistry

    a solid sample of impure Ba(OH)2 is added to 400.0 mL of 0.5000 M of aqueous HBr, a strong acid. the remaining solution was acidic. it was then titrated to equivalence point with 120.0 mL of 0.5000 M of NaOH solution. what mass of

    asked by mel <3 on February 26, 2011
  6. chemistry

    What volume of .200M NaOH will be required to react completely with 32 mL of .15M HNO3

    asked by joe on April 20, 2010

You can view more similar questions or ask a new question.