There are three salts that is yet to be identified:
lead nitrate
iron 2 sulphate
ammonium chloride
can someone help me how to identify this salts or sites to this things?
2006-09-16 23:17:23 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
for ammonium chloride
ammonium ion: to salt solution add neisslers reagent (alkaline K2HgI4) brown ppts appear.
chloride:add AgNO3 to salt solution white ppts.
for iron 2 sulphate
sulphate ion:lead acetate and barium chloride test.
iron 2 ion :pass hydrogen sulphide through salt solution ppts
for lead nitrate
lead ion :add dil HCl to salt solution white ppts
nitrate ion:brown ring test
2006-09-16 23:26:57 · answer #1 · answered by CHIMPU 2 · 0⤊ 0⤋
Gently heat a small portion of the salt. If copious white fumes occur it is NH4Cl, confirm by adding Ag NO3 for a white ppt.
FeSO4 is green in colour the other two are white. Confirm by adding H2O2 and boiling for a rusty brown ppt.
PB(NO3)2 Add a few drops of conc. HCl to a solution of the compound. There should be a white ppt. Confirm by boiling the ppt. will redissolve.
2006-09-17 09:41:16 · answer #2 · answered by christopher N 4 · 0⤊ 0⤋
Add sodium hydroxide. If a dirty-green ppt is obtained,it's Iron(II) sulphate.
If a white ppt is obtained,its lead nitrate.
If no ppt is formed,warm and test with damp red litmus paper. If the litmus paper turns blue,its ammonium chloride.
If these three tests are negative,the salt is neither of the three.
2006-09-17 06:25:09 · answer #3 · answered by Cheng J 2 · 0⤊ 0⤋
ammonium chloride.
take salt add NaoH. AND THEN NESSLER REAGENT,
if brown fumes, NH4+ confirmed.
for Cl-,add conc.hno3 and then silver nitrate
curdy white ppt ll form.
2006-09-17 10:40:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋