Chemistry

7.0 ml of 6.0 M NaOH are diluted with water to a volume of 400 ml. You are asked to find the molarity of the resulting solution. The total number of moles of NaOH is not changed on dilution. Calulate the molarity.

Work: (6)(.007)=(x)(.4)
x=.105M

Thanks for showing your work. I wish more students would do that.

Since the new volume would be 407 ml, I would say
(6)(.007)=(x)(.407)
x=.103M

The problem states that 7.0 mL is diluted with water to a volume of 400 mL. So the 7.0 mL is included in the 400 and 400 mL is the final total volume. Therefore, the molarity is as first calculated of 0.105 M.

  1. 👍 0
  2. 👎 0
  3. 👁 612

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry DrBob

    What is the pH of the solution created by combining 2.30 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? mL NaOH pH wHCl pH wHC2H3O2 2.30 ________ _________ What are the pH

    asked by Amy on May 1, 2008
  2. Chemistry

    100g of water is added into 10.6M NaOH solution. The diluted NaOH then neutralized completely with H2SO4 . density of NaOH is 1.08g/ml . calculate the mole fraction of NaOH in diluted solution .

    asked by Amy on June 28, 2016
  3. Chemistry

    100g of water is added into 10.6M NaOH solution. The diluted NaOH then neutralized completely with H2SO4 . density of NaOH is 1.08g/ml . calculate the mole fraction of NaOH in diluted solution .

    asked by Amy on June 28, 2016
  4. chemistry

    150 mL of a 4.00 molar NaOH solution is diluted with water to a new volume of 1.00 liter. What is the new molarity of the NaOH?

    asked by vee on October 5, 2011
  5. chem

    Calculate the final concentration of a. 4.0 L of a 4.0 M HNO3 solution is added to water so that the final volume is 8.0L b. Water is added to 0.35L of a 6.0M KOH solution to make 2.0L of a diluted KOH solution. c.A 20.0 mL sample

    asked by tracy on November 8, 2012
  6. Chemistry

    100 g of water is added into 10.6 m NaOH solution. The diluted NaOH solution is then neutralized completely with H2SO4 solution. Density of NaOH is 1.08 g/ml. Calculate: i. the mol fraction of NaOH in the diluted NaOH solution.

    asked by Ann on June 28, 2016
  7. Chemistry.. help plz

    3. How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (mL) NaOH HCl ____________ NaOH HC2H3O2 _____________ 4. How would the volume of base change from problem three if the

    asked by Amy on May 1, 2008
  8. chemistry

    Assume that 268mL of 5.00M NaOH are diluted to a final volume of 574mL with water. What is the final molarity of NaOH (FM=40.0).

    asked by Morgan on November 8, 2015
  9. Chem.

    An aspirin tablet weighing 0.400 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric

    asked by Joanne on April 18, 2009
  10. chemistry

    How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (ml) NaOH HCl ___________ NaOH HC2H3O2 ___________ How would the volume of base change from the problem above if the 8.00 mL

    asked by Amy on May 1, 2008

More Similar Questions