Explore BrainMass
Share

CrO42- ions added to PbCrO4 solution to start precipitation

Homework help from our online tutors - BrainMass.com

You have a Lead(II) chromate solution with a concentration of 1.64e-07 mol/L. How many moles of chromate ions do you have to add to just about start precipitation of lead chromate assuming the volume does not change appreciably?
n(CrO4^2-)= ? mol

© BrainMass Inc. brainmass.com September 18, 2018, 9:36 am ad1c9bdddf

Solution Preview

Please see the attached file.

Precipitate Problem
You have a Lead(II) chromate solution with a concentration of 1.64e-07 mol/L. How many moles of chromate ions ...

Solution Summary

It shows how to calculate the moles of CrO42- ions, which are added to Lead(II) chromate solution to make it just about start precipitation. The solution is detailed and was rated '5/5' by the student who originally posted the question.

$2.19