Explore BrainMass
Share

Explore BrainMass

    Stoicheometry as Potassium Salts

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    A 2.9880g sample containing Cl- and ClO4- (as the potassium salts) was dissolved in sufficient water to give 250.0 mL of solution. a 50.00mL aliquot required 13.97mL of 0.08551M AgNO3 to titrate the Cl-. In a second 50.00mL aliquot, the ClO4- was reduced to Cl- with V2(SO4)3. Titration of the reduced sample required 40.12mL of the AgNO3 solution. Calculate the %KCl and %KClO4 in the sample.

    © BrainMass Inc. brainmass.com October 9, 2019, 11:58 pm ad1c9bdddf
    https://brainmass.com/chemistry/physical-chemistry/stoicheometry-potassium-salts-274254

    Solution Preview

    2.9880g sample containing KCl and KClO4
    Dissolve in 250mL

    1) Take 50mL
    13.97mL of a 0.08551 M AgNO3 solution = 0.0012 moles AgNO3

    Since AgNO3 and KCl react 1 to 1 in stoichiometry, this means there is 0.0012 moles of KCl in the 50mL aliquot. So, 0.0012 x 5 = 0.06 moles of KCl in 250 mL solution ...

    Solution Summary

    The expert examines stoicheometry of potassium salts. The %KCl and %KClO4 are calculated.

    $2.19