anthropos Posted July 31, 2005 Share Posted July 31, 2005 When bronze is completely dissolved in nitric acid, what colour would the solution be? Is it light blue, because after the reaction, lead (II) nitrate and copper (II) nitrate are formed (I SUPPOSE). As the former is white and the latter is blue, is it light-blue? o_0 Then name one chemical and describe the test that could be used to determine the presence of copper and tin in solution E. Um...for this question, I am clueless! Does tests which work on solid tin and copper work on aqueous ones? Thanks, guys! Link to comment Share on other sites More sharing options...
kingjewel1 Posted July 31, 2005 Share Posted July 31, 2005 The thing is, neither copper nor tin will react in your nitric acid. It's to do with the nitrate anion's complexing abilities. And so its size. If however you manage it. For the copper, you can add excess ammonia solution and you'll get a dark blue solution. Where do you get the lead from? Test for lead nitrate, hmmm if i remember rightly (sorry long time now) gives a yellow ppte with excess ammonia which does not dissolve. No test for tin that i can think of. Link to comment Share on other sites More sharing options...
anthropos Posted July 31, 2005 Author Share Posted July 31, 2005 whoops, lead is a typo error! sorry Should have check my post before submitting. Link to comment Share on other sites More sharing options...
YT2095 Posted July 31, 2005 Share Posted July 31, 2005 yes it will be light blue (depending on the conc). Link to comment Share on other sites More sharing options...
anthropos Posted August 1, 2005 Author Share Posted August 1, 2005 However, in this website, it claims that when nitric acid reacts with bronze, the colour will be green. o_0 so I am rather puzzled. http://www.sacskyranch.com/metfram.htm Link to comment Share on other sites More sharing options...
YT2095 Posted August 1, 2005 Share Posted August 1, 2005 green is perfectly acceptable also, what you have to consider is the percentages used in the alloy, there are different types of "Bronze" and the concentration of the soln, nothing to worry about Link to comment Share on other sites More sharing options...
anthropos Posted August 1, 2005 Author Share Posted August 1, 2005 Oh, I see...I am enlightened! Thanks a lot! Link to comment Share on other sites More sharing options...
Primarygun Posted August 1, 2005 Share Posted August 1, 2005 However, in this website, it claims that when nitric acid reacts with bronze, the colour will be green. o_0 so I am rather puzzled. Copper reacts with concentrated nitric acid to form a bluish-green solution. Link to comment Share on other sites More sharing options...
anthropos Posted August 1, 2005 Author Share Posted August 1, 2005 hmmm...okay...**batting my eyelids** Link to comment Share on other sites More sharing options...
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