L
** ********* ***
, (b) KM»O0,Test
Water extract+ few
acidifid KMnO
dhops of Pink color of KMnO, is SOisconfirmed.
(c) K,Cr0, Test discharged.
Water exbact+ Few
dops of
acidi fed KCn0, solution. K2Cr201sohution tums green. SOisconfirmed.
For NO Nitrite)
aFeSO Test
Water extract +Acetic acid+
FeSO solution.
Solution turns dark brown or NO is confirmed.
black
b)Starch Iodide Test
Water extractt dil. HSO+ KI . .
solution+ starch solution Deep blue colouration NO2 is conlirmed
T. Concentrated HSO, Group:
Experiment Observation Inference
Preliminary tests
Sall +Conc. H2SOD
a) A colorless, pungent smelling | CL maybe present.
gas is evolved which gives dense
white fumes when a rod
dippedin
NHOH is brought near the mouth
of the test tube.
b) Reddish brown vapouss are Br may be presen
evolved.
c) Violet vapours are seen. may be present.
d) Brown vapours are seen on
NO; may be presenl.
heating which intensify on
adding copper chips.
e) Colourless vapours having CHCOO may be prescnt.
the smell of
vinégar are
evolved
9On heating, colourless gas is C20, con firmed.
evolved which lime water
turn_
milky.
** ********* ***
, (b) KM»O0,Test
Water extract+ few
acidifid KMnO
dhops of Pink color of KMnO, is SOisconfirmed.
(c) K,Cr0, Test discharged.
Water exbact+ Few
dops of
acidi fed KCn0, solution. K2Cr201sohution tums green. SOisconfirmed.
For NO Nitrite)
aFeSO Test
Water extract +Acetic acid+
FeSO solution.
Solution turns dark brown or NO is confirmed.
black
b)Starch Iodide Test
Water extractt dil. HSO+ KI . .
solution+ starch solution Deep blue colouration NO2 is conlirmed
T. Concentrated HSO, Group:
Experiment Observation Inference
Preliminary tests
Sall +Conc. H2SOD
a) A colorless, pungent smelling | CL maybe present.
gas is evolved which gives dense
white fumes when a rod
dippedin
NHOH is brought near the mouth
of the test tube.
b) Reddish brown vapouss are Br may be presen
evolved.
c) Violet vapours are seen. may be present.
d) Brown vapours are seen on
NO; may be presenl.
heating which intensify on
adding copper chips.
e) Colourless vapours having CHCOO may be prescnt.
the smell of
vinégar are
evolved
9On heating, colourless gas is C20, con firmed.
evolved which lime water
turn_
milky.
