Chemistry Help?

Rainbow Dash

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2Hg is incorrect, Hg already gives off 2 electrons. 2Hg would mean that Cl becomes 4Cl, unless that's what your teacher wants. Not only that, but Hg has a positive charge, not a negative one. If it did, it wouldn't be able to pair up with either nitrate or chloride.
I think you're missing something from your initial equation. The equation you wrote doesn't match what Yusuke asked for.

Yusuke said:
Write net ionic equation to show the reaction of aqueous Hg2(NO3)2 with aqueous sodium chloride to form solid Hg2Cl2 and aqueous sodium nitrate.
He says that there are originally 2 Hg's on both sides.


So what he asked for is:

Hg[SUB]2[/SUB](NO[SUB]3[/SUB])[SUB]2[/SUB] [SUB](aq)[/SUB] + 2 NaCl [SUB](aq)[/SUB] → Hg[SUB]2[/SUB]Cl[SUB]2[/SUB] [SUB](s)[/SUB] + 2 NaNO[SUB]3[/SUB] [SUB](aq)[/SUB]
 

Punk Hazard

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I think you're missing something from your initial equation. The equation you wrote doesn't match what Yusuke asked for.



Hg[SUB]2[/SUB](NO[SUB]3[/SUB])[SUB]2[/SUB] [SUB](aq)[/SUB] + 2 NaCl [SUB](aq)[/SUB] → Hg[SUB]2[/SUB]Cl[SUB]2[/SUB] [SUB](s)[/SUB] + 2 NaNO[SUB]3[/SUB] [SUB](aq)[/SUB]
I'm almost certain that's a mistake, I interpreted the 2 as the 2 electrons Hg gives up. Hg2(NO3)2 doesn't make sense, because nitrate has a charge of -1. Hg having a subscript of 2 in this equation would mean that nitrate has a charge of -2, which isn't the case. Mercury(Hg) and nitrate together is an ionic bond, metal and non-metal, and the charges switch places and becomes subscripts. Mercury's +2 charge becomes the subscript 2 for nitrate, and nitrate's -1 charge becomes the subscript 1 for Hg, hence Hg(NO3)2. I'm almost certain Hg2(NO3)2 doesn't exist. If there were 2 Hgs, it wouldn't be written as Hg2, but 2Hg.
 

Punk Hazard

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Do you wear glasses?
I tend to get odd compliments, like "you write like a girl" or "your handwriting is very pretty" lol wtf
I don't actually. I really need glasses though. I tend to hunch while I write.

I've gotten a bunch of compliments on my handwriting. And then I find my old AP Psych notes and cringe xD
 

Funky Tiger

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The chemical equation is as follows:

Hg(NO3)2 + 2NaCl=HgCl2 + 2NaNO3

To find net ionic, you first need complete ionic, which is just breaking apart each individual molecule. It is as follows:

Hg2+ + 2NO3- + 2Na+ + 2Cl-=HgCl2(s0 + 2Na+ + 2NO3-.

In the complete ionic, you break down everything but the precipitate. To find the precipitate, you can just follow these rules, called the solubility rules


When writing a complete ionic equation, the precipitate, which is the solid that forms, remains together. The net ionic equation is just the two parts that form the precipitate and the precipitate itself:

Hg2+ + 2Cl-=HgCl2(s)

The bolded is your answer. If you have any questions about this post, ask away.
protip: silver/mercuric chloride are almost always the precipitates in a reaction they're a part of, their chlorides give away white precipitates almost instantly

also, on topic: Hg[sup]2+[/sup] + 2Cl[sup]-[/sup] -------> HgCl[sub]2[/sub]
 
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