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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Boxxxed on November 02, 2013, 11:08:58 AM

Title: Need help Identifying this compound
Post by: Boxxxed on November 02, 2013, 11:08:58 AM
This is a 2 element compound. I've identified the anion to be Cl and I know the cation is group 5 or 6. I am leaning towards 6 since I couldn't get any precipitates in the group separation. I have posted a picture below. It is clumpy and relatively sticky, unlike regular powder. It reminds me of fish eggs.

Any help is appreciated

(https://www.chemicalforums.com/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FNJ37klz.jpg&hash=21f3bf9b459f466956571a14c28e0882cc4e0bea)
Title: Re: Need help Identifying this compound
Post by: Arkcon on November 02, 2013, 01:37:49 PM
You're going to have to identify what elements are contained in "group 5 or 6" in your particular Qualitative Analysis scheme, they're not all the same.  You will also have to mention what tests you've done so far, and what tests you can perform.  Your bit of trivia about the sample's consistency is useful, but you'll have to save it for later, when you want a conforming test.
Title: Re: Need help Identifying this compound
Post by: Boxxxed on November 02, 2013, 03:29:36 PM
The only possibilities in my case are Ca2+, Sr2+, Ba2+ Na+, K+ NH4+ and Mg2+

I don't have access to the lab any longer and I've tried google imaging all the combinations but nothing that looks the same comes up
Title: Re: Need help Identifying this compound
Post by: Borek on November 02, 2013, 03:48:40 PM
Quote from: Boxxxed on November 02, 2013, 03:29:36 PM
The only possibilities in my case are Ca2+, Sr2+, Ba2+ Na+, K+ NH4+ and Mg2+

First thing that comes to mind - all these are quite unlikely to give a yellow compound.