Why are the reagents used to test for cations usually alkali metal salts or ammonium salts rather than salts of other metals?
2007-12-08 14:23:51 · 3 answers · asked by david edwards 2 in Science & Mathematics ➔ Chemistry
alkali and ammonium are both cations w/ valance of 1.
2007-12-08 14:28:08 · answer #1 · answered by Jennifer K 2 · 0⤊ 0⤋
In qualitative prognosis you'll know the ions/factors placed on your components. a million.at the start, answer B releases ammonia gas(c)which turns damp pink litmus blue, has stinky, choking smell. (B) is composed of nitrate ion-NO3(2-) considering test for nitrate:heat with sodium hydroxide & aluminium powder consequence:ammonia gas produced The white powder generally incorporates lead. (A) IS LEAD CARBONATE provided that it promises a colourless gas(E) HEAVIER than air which could be carbon dioxide The colourless answer(D) IS LEAD NITRATE. Lead nitrate is used to test for iodide ions whilst mixed with an iodide containing answer it provides yellow ppt answer D could comprise the two aluminium or zinc considering the two one among those metals produce white ppt soluble in sodium hydroxide determination Assuming this is aluminium considering of the powder, whilst aqueous ammonia is extra it would not dissolve in it(insoluble in extra) E is CO2 F is AlOH A is PbCO3 G is NO3(2-) loses 2 electrons & will become NO3 test for C (AMMONIA):positioned damp pink litmus paper effect:the litmus turns blue
2016-12-10 17:03:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
cost less
2007-12-08 14:28:14 · answer #3 · answered by reb1240 7 · 0⤊ 0⤋