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Topic: Why does ZnS doped Ag turn yellow?  (Read 2841 times)

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Offline priyoX

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Why does ZnS doped Ag turn yellow?
« on: October 12, 2016, 12:59:26 PM »
I've been trying to pour a 20ml 0.4M solution of SIlver nitrate into a zinc nitrate solution, but its turning yellowish brown instantly. Why would this happen? I've even changed bottles to prevent contamination, but its still yellowing out?
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Offline Mitch

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Re: Why does ZnS doped Ag turn yellow?
« Reply #1 on: October 12, 2016, 05:05:19 PM »
Is something precipitating out?
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Offline Arkcon

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Re: Why does ZnS doped Ag turn yellow?
« Reply #2 on: October 12, 2016, 08:42:56 PM »
Photoreaction?
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Offline mjc123

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Re: Why does ZnS doped Ag turn yellow?
« Reply #3 on: October 13, 2016, 04:27:24 AM »
Zinc nitrate or zinc sulfide?
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Offline jasongnome

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Re: Why does ZnS doped Ag turn yellow?
« Reply #4 on: October 14, 2016, 02:04:10 AM »
Zinc sulfide is insoluble, so it can't be a solution of that.

A yellowish brown colour in nitrates usually occurs when nitrogen oxides are formed.

Is the yellowish brown colour clear, or is it a precipitate?
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