Iam trying to prepare 0.1M ZnCl2 solution but it is forming white precipitate.
What are factors that influence its solubility in water or what might be the probable solvent to make it soluble.
Zinc chloride is very soluble in water & will usually form clear solution. With excess water, zinc oxychlorides are formed. These usually precipitate. To have more clear picture about what happens, I attached a reference in the link below & I added another RG reference for proper preparation of a solution of ZnCl2 .
ZnCl2 also dissolves in ethanol & also in acetone.
My regards.
http://ir.canterbury.ac.nz/handle/10092/7787
https://www.researchgate.net/post/How_do_I_prepare_a_solution_of_ZnCl2_with_density_21g_l
Santhosh, Good advice was given by Nizar Matar. Your problem has been known for a very long time (19th century). Check out this:
http://onlinelibrary.wiley.com/doi/10.1002/jps.3080070807/abstract
To make a ZnCl2 solution (even at low molarity), add water to ZnCl2. At this point, a white precipitate will form corresponding to Zn oxychloride. Acidify the solution by addition of 1N HCl until the pH reaches 2.5-3.0. The white ppte will go into solution and solution should be clear at this point.
Please look at the following below links which may help you in your analysis:
http://www.zaclon.com/pdf/zincchl_datasheet.pdf
https://en.wikipedia.org/wiki/Zinc_chloride
https://www.quora.com/Is-zinc-chloride-soluble-How-do-you-make-a-solution-of-zinc-chloride-and-water-without-precipitate
https://periodic-table-of-elements.org/SOLUBILITY/zinc_chloride
Thanks
Add Concentrated HCL and dissolve the Zinc metal by warming the solution.
For a rather similar RG discussion, please check: https://www.researchgate.net/post/when_i_prepare_a_zinc_chloride_solution_a_white_precipitate_is_shown_plz_can_someone_tell_me_why_and_how_i_can_avoid_this_problem
how do to I make a 1M solution of zinc Chloride in THF, it needs to be anhydrous with minimum amount of water < 0.5%. Any thoughts?
Add few drops ( 2 to 4) of Concentrated HCl to it and allow it to stir for few minutes then store it in a suitable container wait for its digestion (Overnight) then we can use it.
The real question is: How can you NOT dissolve ZnCl2 in water?
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