AIM:
M
To prepare 100 mL of oxalic acid solution. Find the molarity and strength in
0 g/LofKMn0,
sohution by titrating it against the standard solution of oxalic açid.
MATERIAL REQUIRED:
Weight box, wateh glass, chemicalbalance, standard flask, eonical flask, burette, pipette, funnel,
Xalic acid crystals, dil
sulphuric acid, distilled water, KMnO,
THHEORY:
no.of moles of solute mass of solute
Molarity
volume of solution(L) GMMxvolume of solution(L)
mass of Svlute x 1000
10 126x100 :
mass of solute =1.26 g:-(in100mLof
solution).
Potassiun permanganate oxidises oxalate
ions in acidic medium in hot and
nous ions. itself reduces to manga-
Molecular Equation:
2KMnO,+3H,SO, ->
KSO,+2MnSO, +3H,0+5[0]
(COOH),+[O] 2co, +H,0]x5
2KMnO,+3H,SO, + 5(C0OH),> KSO, 2MnSO+10co, +8H,0 +
Iouic equation:
MnO,+8H*+ Se Mi+4H,0 ]x 2
0 2C0, +2e
2 MnO, +
16H SC,0
+
?Mn" 10C0, +8H,0
+
Formula Used: *********.
5x M,V, =2 *M,V, * **
M,=Molarity of KMnO,
V Volume of KMnO,
M, Molarity ofoxalic acid
=
V= Volume of oxalicacid
Solution taken in burette: Potassium pemanganáte
Soution taken in pipette: oxalic acid
End Point: Colourless to pink
selfindicator
Indicator : KMnO, acts as a
Procedure
(a). Preparationofstandard solution balance.
Weigh an
and
empty. clean dry watch glass on a
** **
M
To prepare 100 mL of oxalic acid solution. Find the molarity and strength in
0 g/LofKMn0,
sohution by titrating it against the standard solution of oxalic açid.
MATERIAL REQUIRED:
Weight box, wateh glass, chemicalbalance, standard flask, eonical flask, burette, pipette, funnel,
Xalic acid crystals, dil
sulphuric acid, distilled water, KMnO,
THHEORY:
no.of moles of solute mass of solute
Molarity
volume of solution(L) GMMxvolume of solution(L)
mass of Svlute x 1000
10 126x100 :
mass of solute =1.26 g:-(in100mLof
solution).
Potassiun permanganate oxidises oxalate
ions in acidic medium in hot and
nous ions. itself reduces to manga-
Molecular Equation:
2KMnO,+3H,SO, ->
KSO,+2MnSO, +3H,0+5[0]
(COOH),+[O] 2co, +H,0]x5
2KMnO,+3H,SO, + 5(C0OH),> KSO, 2MnSO+10co, +8H,0 +
Iouic equation:
MnO,+8H*+ Se Mi+4H,0 ]x 2
0 2C0, +2e
2 MnO, +
16H SC,0
+
?Mn" 10C0, +8H,0
+
Formula Used: *********.
5x M,V, =2 *M,V, * **
M,=Molarity of KMnO,
V Volume of KMnO,
M, Molarity ofoxalic acid
=
V= Volume of oxalicacid
Solution taken in burette: Potassium pemanganáte
Soution taken in pipette: oxalic acid
End Point: Colourless to pink
selfindicator
Indicator : KMnO, acts as a
Procedure
(a). Preparationofstandard solution balance.
Weigh an
and
empty. clean dry watch glass on a
** **
