Complete and Net Ionic Equations

AI Thread Summary
The discussion revolves around balancing molecular, complete ionic, and net ionic equations for the reaction between chromium(III) iodide and lead(II) nitrate. The molecular equation provided is 2CrI3 (aq) + 3Pb(NO3)2 (aq) → 2Cr(NO3)3 (aq) + 3PbI2 (s). The complete ionic equation includes all ions present, while the net ionic equation simplifies it to 3Pb2+ (aq) + 6I- (aq) → 3PbI2 (s). Participants express confusion about balancing the complete ionic equation but agree that the net ionic equation correctly represents the formation of lead(II) iodide. The thread emphasizes the importance of correctly formatting chemical equations for clarity.
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Homework Statement


An aqueous solution of chromium(III) iodide is mixed with an aqueous solution of lead(II) nitrate

(a) Write the molecular equation for this reaction
(b) Write a complete ionic equation for this reaction
(c)If this reaction occurs, write the net ionic equation

I'm kinda lost on how to balance the complete and net ionic equations, this is what I've done so far:

The Attempt at a Solution



(a) 2CrI3 (aq) + 3Pb(NO3)2 (aq) -----> 2Cr(NO3)3 (aq) + 3PbI2 (s)

(b) 2(Cr)3+ (aq) + 6(I)- (aq) + 3(Pb)2+ (aq) + 6(NO3)- -----> 3PbI2 (s) + 2(Cr)3+ (aq) + 6(NO3)- (aq)

(c) 3(Pb)2+ (aq) + 6(I)- (aq) -----> 3PbI2 (s)
and if i divide all the coefficients by 3 then the cofficients are 1,2,1

I'm just sort of lost on writing the complete balance ionic equation. I would greatly appreciate someone looking over my work and tell me where I've gone wrong, thanks in advance
 
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I don't see anything wrong. The reduced equation in c) is exactly the normal production of lead(II) iodide from ions, so it is a good thing to reduce to.
 
Please note: you can format your equations using subscripts and superscripts. You can use X2 and X2 icons in the advanced editor, or [noparse] and [/noparse] tags.

For example

[noparse]NO3-[/noparse]

is displayed as

NO3-.
 
Thanks a lot guys, Borek I'll keep that in mind in the future thank you and Dchair thanks for looking over my work
 
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