Chemistry

A solution of is prepared by adding 50.3ml of concentrated hydrochloric acid and 16.6ml of concentrated nitric acid to 300ml of water. More water is added until the final volume is 1.00L.
Calculate (H+) (OH) and the PH for this solution. Hint concentrated HCL is 38% hcl by mass and has a density 1.19g/ml.
Concentrated HN03 is 70% HN03 and has a density of 1.42g/ml

My calculation
1.19g/ml x 1000ml x 0.38/36.46 = 12M (HCL)
1.42g/ml x 1000ml x 0.7/63.01 = 16M (HN03)
(HCL) 50.3 x 12M = 604ml
(HN03) 16.6ml x 16M = 265.6ml

I am not completed. Who helps me to solve it for me. Pls help

  1. 👍 0
  2. 👎 0
  3. 👁 248
  1. 1.19g/ml x 1000ml x 0.38/36.46 = 12M (HCL)
    1.42g/ml x 1000ml x 0.7/63.01 = 16M (HN03)
    You are OK to here.
    (HCL) 50.3 x 12M = 604ml(millimols, not mL) which converts to about 0.6 mol
    (HN03) 16.6ml x 16M = 265.6ml (millimols, not mL, which convertw to about 0.266 mol)
    Then M = total mols/total L or about
    0.87 mol/1.00L = about 0.87M

    Since both HCl and HNO3 are strong acids they ionize 1oo%; therefore, (H^+) = same as molarity of the solution. pH is obtained from this. Then (H^+)(OH^-) = Kw = 1E-14. You know (H^+) and Kw, solve for (OH^-).

    1. 👍 0
    2. 👎 0
  2. yaaaaasssssssssssss

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    Hydrochloric acid is usually purchased in concentrated form with a 37.0% HCL concentration by mass and a density of 1.20g/mL. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500M HCL

    asked by Monique on November 6, 2011
  2. Chemistry!!

    A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of .50 M when added to 100.0mL of water. A)what should the molarity of the stock solution be? B)If the

    asked by Anonymous on April 22, 2013
  3. Gr 11 Chemistry-Dilutions

    The cafeteria decides to save money by using concentrated acetic acid (CH3COOH at 17.5 mol/L) and diluting it with water toproduce vinegar (5.00% m/v aceticacid). a) What is the concentration of vinegar in mol/L?b) What volume of

    asked by Anonymous on December 17, 2017
  4. Chem

    The mass of a beaker is 5.333g. After 5.00 mL of a concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229 g. From the data, what is the

    asked by Amy on September 1, 2015
  5. Chemistry

    You can purchase hydrochloric acid in a concentrated form that is 37.0 hcl by mass and has a density of 1.20g/mL. Describe how exactly you would prepare 2.85 L of 0.500 M HCL from the concentrated solution.

    asked by Rebecca on May 7, 2014
  1. chemistry

    (iii) If the chemist wants to prepare 5.00 litres of the stock solution from concentrated H2SO4 , which is 18.0M, what volume of concentrated acid should be used?

    asked by clem on December 16, 2014
  2. chemistry

    if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a

    asked by Anonymous on January 11, 2015
  3. Chemistry

    How much concentrated solution would you take to prepare 2.80L of 0.475M HCl by mixing with water? Hydrochloric acid is usually purchased in a concentrated form that is 37.0% HCl by mass and has a density of 1.20g/mL.

    asked by M J on February 21, 2013
  4. Chemistry

    What volume of concentrated hydrochloric acid (12.0 M HCl) is required to make 2.0 liters of a 3.0 M HCl solution?

    asked by Wilson on March 25, 2016
  5. chemistry

    Calculate the PH concentrated hydrochloric acid if this solution is 24.8% HCL by weight and has a density of 1.16g/ml. I do not understand the right answer 0.90PH Why? Please help My calculation 1.18g/ml x 1000ml x 0.248/36.5 =

    asked by Fai on July 29, 2012
  6. chemistry

    if the average concentration of PCBs in the body tissue of a human is 4.0 ppm, what mass of the PCB is present in a 64 kg person? is this a significant amount in regards to the health of the person? What is the concentration of a

    asked by Anonymous on January 11, 2015

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