Chemical Forums

Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: shadowflame1639 on December 31, 2008, 02:10:46 PM

Title: color of percipitate in a reaction?
Post by: shadowflame1639 on December 31, 2008, 02:10:46 PM

sorry if this in the wrong section wasn't quite sure where to put it.

So If I react AgNO3 + NaCO3 = 2NaNO3 + Ag2CO3 ( believe I've got it blanaced right^^;) wil there be a percipitate, what color will the percipitate be, how do I know this with out preforming a reaction? I looked around a little and didn't find much so yeah^^; sorry if you'd already answered this.

Title: Re: color of percipitate in a reaction?
Post by: Mr Peanut on December 31, 2008, 03:21:04 PM

Silver carbonate has a solubility product ~ 8e-12. You will get a ppt if:

([Ag+]^2)[CO3--] exceeds this value. (Likely)

It is a yellow to grey-yellow ppt.

ps equation not balanced

Title: Re: color of percipitate in a reaction?
Post by: Arkcon on December 31, 2008, 03:31:12 PM

Pictures are a little hard to find, you may have to do the google image search, and go deep in.  Or you can try college level text books.  Back in my day (oh, these aging bones) you'd see at least a few pictures in a college text.  But no one really does these often enough for it to be worthwhile hosting the pictures online.  And descriptions of colors -- might not really help you when it's time.  Like I mention in this thread here:

http://www.chemicalforums.com/index.php?topic=29298.msg111202#msg111202

Title: Re: color of percipitate in a reaction?
Post by: shadowflame1639 on December 31, 2008, 05:34:35 PM

thank you both^^

lol wow I can't believe I forgot the 2...let me go finish balancing that XD there we go now it's balanced 2AgNO3 + Na2CO3 = 2NaNO3 + Ag2CO3 there we go...I hate typos^^;