Chemistry II

If 36.0 mL of 7.0e-4 M HClO4 is added to 19.5 mL of 8.2e-4 M LiOH, what is the pH of the solution?

Write the equation.
Calculate mols HCLO4.
Calculate mols LiOH.
Determine how much of which reagent remains after the reaction.

pH = -log(H^+)
post your work if you get stuck.

found the mols of both HClO4 and LiOH
what do you mean by reagent remaining after reaction?

Write the equation. One is an acid, the other a base, they will react to form a salt + H2O. One will be used up and some of the other will remain.

HClO4 + LiOH --> HOH + LiClO4

how do you figure which is used up and which remains?

Look at the problem below (one of your posts) on Ba(OH)2 and HCl. You asked the same question there and I worked the problem in detail. This one is done the same way. Get back to me if you don't understand.

  1. 👍 0
  2. 👎 0
  3. 👁 194
asked by Jayd

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    In accordance with Hessfs Law, manipulate the following equations and their ƒ¢Hrxnfs to calculate ƒ¢Hrxn for the reaction HClO4 + NH3 ¨ NH4ClO4... HClO4(aq)+ LiOH(aq) ¨ LiClO4(aq)+H2O(l) CH3COOH(aq)+ NH3(aq) ¨

    asked by Angela on July 7, 2013
  2. Chemistry

    In accordance with Hess's Law, manipulate the following equations and their change in Hrxn to calculate change in Hrxn's for the reaction HClO4 + NH3 N NH4ClO4... HClO4(aq)+ LiOH(aq)¨ LiClO4(aq)+H2O(l)

    asked by Angela on July 7, 2013
  3. chemistry

    The equivalence point of a titration is reached when 35.50 mL of 0.40 M HBr is added to a 25.00 mL sample of LiOH. The original [LiOH] is... a. 0.014 M b. 0.57 M c. 0.024 M d. 0.28 M

    asked by help asap on April 3, 2012
  4. Chemistry

    an acid base titration is conducted in which 20 ml of LiOH is added to 10ml of .200M HBr to reach the equivilance point. what is the molarity of the LiOH solution?

    asked by Elf on April 12, 2010
  5. chemistry

    1) a 100ml smaple of 0.18M HCLO4 is titrated with 0.27M LiOH. determine the ph of the soution after the addition of 66.67 ml of LiOH (this is at equivalence point) 2)a 100 ml sample of .20M HF is titrated with .10M KOH. determine

    asked by lia on March 8, 2011
  6. Environmental Chemistry

    Calculate the pH when the following volumes of 0.20 M LiOH are added into 50 mL of a 0.1 M HCl solution. Both LiOH and HCl are strong electrolytes. a) 0 mL b) 10 mL c) 24.6 mL d) 25 mL e) 25.6 mL f) 30 mL g) 40 mL

    asked by Dauren on May 8, 2012
  7. chemistry...

    thanks for the last help, i got the right answer!! i got this wrong... (answer is supposed to be 0.165 but i put 0.0652) A sample of Na2CO3 weighing 0.2863 g is dissolved in 50 mL of water and an endpoint is reached when 32.83 mL

    asked by mark on November 16, 2007
  8. chemistry

    Which response includes all of the following LiOH, KOH, Ni(OH)2, Mg(OH)2, Ca(OH)2 that are insoluble bases, and no others? 1. Mg(OH)2 2. LiOH, Mg(OH)2, Ca(OH)2 3. Mg(OH)2, Ca(OH)2 4. Ni(OH)2, Mg(OH)2 5. LiOH, Ni(OH)2

    asked by cheri on September 19, 2012
  9. Chemistry

    27.0 mL of 1.00 M HClO4 are mixed with 27.0 mL of 1.00 M LiOH in a coffee cup calorimeter. The calorimeter constant is 28.1 J/C. Both were initially at 21.31 C. Calculate delta H(rxn) in kJ/mol for the reaction.

    asked by Sue on October 20, 2010
  10. chem

    A 26.8 mL sample of an unknown HClO4 solution requires 46.8 mL of 0.101 M NaOH for complete neutralization. What was the concentration of the unknown HClO4 solution? The neutralization reaction is shown below. HClO4(aq) + NaOH(aq)

    asked by hannah on March 18, 2011

More Similar Questions