2007-10-28 23:36:48 · 3 answers · asked by fuburyder14 1 in Science & Mathematics ➔ Chemistry
If you have these compounds in solid form there are several ways to find it out.
(1) Lead nitrate is much more heavy - high density then Magnesium nitrate.
(2) On heating in a test-tube on burner Lead nitrate will emmit red fumes of N2O5 and other nitric oxides.
(3) HCl will precipitate Lead chloride in solution, Magnesium chloride is water soluble.
2007-10-28 23:47:59 · answer #1 · answered by Abhijit Purohit 4 · 0⤊ 0⤋
You can test for presence of Pb2+ cations by adding aqueous Sodium Hydroxide(NaOH) into your unknown mixture of magnesium nitrate and lead nitrate. The lead compound will form a soluble white precipitate,which in turn dissolves in excess NaOH to form a colourless solution. This can be a little tricky.
2007-10-29 06:49:39 · answer #2 · answered by Stunned 2 · 0⤊ 0⤋
You canuse HCl since PbCl2 is not very soluble and precipitates
2007-10-29 06:48:13 · answer #3 · answered by maussy 7 · 0⤊ 0⤋