Chamistry

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I am currently doing a lab write up and i have a little problem with some ionic equations

the question goes as follows:

You are provided with aqueous solutions of CaCl2, AlCl3, ZnCl2, CuCl2, FeCl2 and FeCl3 in six separate test tubes. To each of the solutions add 2-3 drops of dilute NH3 solution. Record your observations and illustrate changes observed with an ionic equation. Then continue to add NH3 solution until it is in excess.Record any changes observed.

My observations

CaCl2-no ppt
AlCl3-white ppt, insoluble in excess
Zncl2-white ppt, soluble in excess
CuCl2- light blue ppt, soluble in excess
FeCl2-dirty green ppt, insoluble in excess
FeCl3-red brown ppt, insoluble in excess

so the first ionic equation would be
Ca^2+ + 2Cl^- + N^3- +3H^+ yielding the same products right?

but then what will happen to the rest
will the products of the second one for example be AlN or Al(OH)3 ?

Could you please help me with the remaining ionic equations??

thank you
Marysia

  • chem -

    see other post.

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