Explore BrainMass

Explore BrainMass

    Precipitating and Dissolving Zinc Hydroxide

    Not what you're looking for? Search our solutions OR ask your own Custom question.

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

    I have zinc hydroxide in solution --- Zn(OH)2 is generally insoluble. My goal is to first render the zinc completely insoluble. We are given a choice of Al2(SO4)3 or H2SO4 in order to lower the pH and solubilize the zinc ---- which is better and why? Then, at a later time, my goal is to render the zinc back to a soluble form and precipitate it? Can this be done with just NaOH or is there an intermediate step in which something like a PO4^-3 ion must be introduced to bond with the zinc first before hydroxide precipitation occurs??

    Can you help me understand this process?

    © BrainMass Inc. brainmass.com December 15, 2022, 7:53 pm ad1c9bdddf

    Solution Summary

    This solution explains how to precipitate and dissolve zinc hydroxide using various pH's.