molarity

calculate the molarity of k+ in a soln prepared by adding .2L of .200M K3PO4 and 75.0mL of .5M K3PO4. assume volumes are additive.

A few of steps here and more than one way to answer the problem

You need to calculate the total number of moles of K3PO4 from the two volumes and two concentrations.

This is in the total volume of 0.2 L+0.075 L=

You can now calculate the molarity of K3PO4 in moles/L

Assume that the K3PO4 dissociates to

3K^+ and PO4^3-

you can now calculate the [K+]

Tip - try not to forget the leading zeros as I nearly read 2 L rather than 0.2 L 8-))

  1. 👍 0
  2. 👎 0
  3. 👁 150

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    calculate the pH of a soln prepared by dissolving 1.5 g of potassium hydroxide in 300.0 ml of soln

    asked by jared on May 18, 2010
  2. chemistry 32

    Calculate the concentration, in molarity, of a solutiion prepared by adding 9 mL of water to 1mL of 0.1 M of HCl

    asked by Adrian on March 10, 2011
  3. Chemistry

    Calculate the concentration, in molarity, of a solution prepared by adding 9 mL of water to 1 mL of 0.1 M HCl solution. If 2.0 mL of 0.010 M NaOH is mixed with enough water to make the total volume 8 mL, what is the molarity of

    asked by Nico on October 3, 2011
  4. chemistry

    suppose u r given a conc soln of hcl which is known to be 37% hcl & has a soln density of 1.19g/ml. What is the molarity and molality of hcl in this soln

    asked by oluchi on January 26, 2013
  5. chemistry

    Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.

    asked by kelli on April 3, 2013
  6. chemistry

    Calculate the molarity of the K+ ion in a solution prepared by adding of 5.55 g of K2SO4 to enough water to form 0.500 L of solution.

    asked by julie on December 15, 2012
  7. chemistry

    Calculate the molarity (M) of Na+ in a solution prepared by adding 1.00 L of 0.800 M NaHC2O4 and 250 mL of 0.300 M NaHC2O4 . Assume volumes are additive. the answer is 0.700 but im not sure how to go about solving it please help

    asked by BOB on September 29, 2011
  8. chemistry

    A solution of sodium bicarbonate is prepared by adding 45.00g of sodium bicarbonate to a 1.00-L volumetric flask and adding distilled water until it reaches the 1.00-L mark. Calculate the concentration of sodium in units of: a)

    asked by Maria on January 15, 2011
  9. Chemistry

    What is the molarity of H2SO4 in a solution prepared by adding 15.0 mL of 6.0 Molarity H2S04 to enough water to make 100.0 mL of solution?

    asked by Andrea on October 5, 2011
  10. chemistry

    Calculate the molarity (M) of AlCl3 in a solution prepared by adding 0.750 L of 0.7 M AlCl3 and 0.250 L of 0.1 M AlCl3 . Assume volumes are additive

    asked by Anonymous on June 3, 2014

More Similar Questions