
Acid / Base Titrations
Ammonium sulphate (NH4)2SO4. FW = 132.14, Eq. = 66g/l. 250ml 0.05M = 1.325g =
0.1N 
Adipic acid HO2C(CH2)4CO2H,
FW = 146.4, Eq. = 73.03g/l
250ml 0.05M = 1.83g = 0.1N

Barium hydroxide
Ba(OH)2.8H2O, FW = 315.48, Eq. = 157.5g/l
250ml 0.05M = 3.94g = 0.1N

Benzoic acid C6H5COOH, FW =
122.12, Eq. = 61g/l
250ml 0.05M = 1.52g = 0.1N

Calcium carbonate CaCaCO3, FW
= 100.00, Eq. = 50g/l
250ml 0.05M = 1.25g = 0.1N

Furroic acid FW = 112.08, Eq.
= 112g/l
250ml 0.1M = 2.8g = 0.1N

Hydrochloric acid HCl, FW =
36.5, Density = 1.2
1M = 83mls = 1N (Use 86mls)
250ml 0.1M = 2mls = 0.1N
1 liter 0.1M soln = 8.6mls = 0.1N

Oxalic acid
H2C2O4.2H2O, FW = 126.07, Eq. = 63g/l
250ml 0.05M = 1.575g = 0.1N

Potassium hydrogen phthalate
KH(C8H4O4), FW = 204.23, Eq. =204g/l
250ml 0.1M = 5.105g = 0.1N

Potassiun hydrogen iodate
KH(IO3)2, FW = 389.92, Eq. 73.07g/l
250ml 0.1M = 9.75g = 0.1N

Sodium carbonate Na2CO3,
FW = 106, Eq. =53g/l
250ml 0.05M = 1.325g = 0.1N

Sodium hydroxide NaOH, FW =
40, Eq. = 40g/l
250ml 0.1M = 1.0g = 0.1N
1 liter 0.1M soln = 4g = 0.1N

Sodium oxalate Na2C2O4, FW =
134.00, Eq. =134g/l
250 0.1M = 3.35g = 0.1N

Sodium tetraborate
NaB4O7.10H2O, FW = 381.37, Eq. =190g/l
250ml 0.05M = 4.762g =0.1N

Succinic acid HO2CCH2CH2CO2H,
FW = 118.09, Eq. = 59.045g/l
250ml 0.05M = 1.475g = 0.1N

Sulphamic acid H2NSO3H, FW =
97.09, Eq. = 99.09g/l
250ml 0.10M = 2.425 = 0.1N

Sulphuric acid H2SO4, FW =
98.08, Density = 1.8
1M = 56mls = 2N
250ml 0.05M = 0.7mls = 0.1N
1 liter 0.05M = 2.8mls = 0.1N (use 3 mls)

Tris
(hydroxymethyl)aminomethane H2N.C(CH2OH)3, FW = 121.14,
Eq. = 121g/l
250ml 0.1M = 3.023g =0.1N

Titrations with Permanganate
Ammonium oxalate (NH4)2C2O4,
FW = 124, Eq. = 62g/l
250ml 0.05M = 1.55g = 0.1N

Ferrous ammonium sulphate
FeSO4(NH4)2SO4.6H2O, FW – 392, Eq. 392g/l
250ml 0,1M = 9.8g = 0.1N (add a few drops of conc. H2SO4 to clear)

Hhdrogen peroxide H2O2, FW =
34. Eq. = 17g/l
10 Vol. = 3%
20 Vol. = 6% = 1.8M
100 Vol. = 30%
250ml 0.05M = 12.50ml of 20 Vol. = 0.1N
1 liter 0.05M = 50ml of 20 Vol. = 0.1N (add 2 mls conc. H2SO4 per
liter soln)
1 liter 0.05M = 10mls of 100 Vol.
1 liter 0.05M =35mls of 30 Vol.
Volume strength = 11.2/34 x strongth of peroxide in g/l

Iron allum (ferric ammonium
sulphate) FeNH4(SO4)2.12H2O,
FW = 482.19, Eq. =241g/l
250ml 0.05M = 6.02g = 0.1N
Oxalic acid (anhyd.) H2C2O4,
FW = 90, Eq. = 45g/l
250ml 0.05M =1.125g = 0.1N

Potassium permanganate KMnO4,
FW =158.04, Eq. ==31.6g/l
250ml 0.02M = 0.79g = 0.1N (dissolve in hot water)
1 liter 0.02M = 3.16g = 0.1N (boil to dissolve crystals, then dilute to
1liter)

Sodium nitrite NaNO2, FW =
69.00, Eq. = 34.56/l
250ml 0.05M = 0.86g = 0.1N (use 1g)
Sodium oxalate Na2C204, FW =
234, Eq. = 67g/l
250ml 0.05M = 1.675g = 0.1N

Titrations with Dichromate
Potassium dichromate K2Cr2O7,
FW = 294, Eq. = 49g/l
250ml 0.0167M = 1.22g = 0.1N
1 liter 0.0167M = 4.90g = 0.1N
Potassium iodate KIO3, FW =
214, Eq. = 35.73g/l
250ml 0.0167M = 0.892g = 0.1N

Tin, Sn, FW = 119.0, Eq. =
59.5g/l
Tin (11) chloride use metallic
tin dissolved in conc. HCl
250ml 0.05M = 1.49g = 0.1N
Spathic iron ore FeCO3, FW =
116, Eq. = 116g/l
250ml 0.1M = 2.9g = 0.1N

Titrations with iodine and Thiosulphate
Sodium thiosulphate
Na2S2O3.5H2O, FW = 248.18, Eq. = 248g/l
250ml 0.1M = 6.2g = 0.1N
1 liter 0.1M = 24.8g = 0.1N

Potassium iodide KI, FW =
166, Eq. =166g/l
250ml 0.1M = 4.15g = 0.1N
1liter = 0.1M 16.6g = 0.1N

Potassium iodate KIO3, FW =
214 Eq. = 35.73g/l
250ml 0.0167M = 0.892g = 0.1N

Iodine, I_{2} FW =
253.18, Eq. = 127g/l
1 liter 0.05M = 12.7g = 0.1N
(use 13g Iodine and add 25g KI

Copper sulphate CuSO4.5H2O,
FW = 249.68, Eq. = 249.68g/l
250ml 0.1M = 6.24g = 0.1N
Note: add anhy. NaCO3 untill a slight permanent bluish colour is
formed. Add a little acetic acid to get a clear blue colour, then make
up to the mark.

Copper sulphate, anhydrous
CuSO4, FW = 159.6, Eq. = 159.6g/l
250ml 0.1M = 4g =0.1N 
Bleaching powder CaOCL2, FW =
145, Eq. = 72,5g/l
250ml 0.05M = 1.81g = 0,1N
(use 2.5g)

Sodium sulphite Na2SO3.5H2O,
FW = 126.04, Eq. = 63g/l
250ml 0.05M = 1.57g = 0.1N

Titrations with Silver Nitrate
Silver nitrate AgNO3, FW =
170, Eq. =170g/l
250ml 0.1M = 4.25g = 0.1N
Sodium chloride NaCl, FW =
58.5, Eq. = 58.5g/l
250ml 0.1M = 1.4625g = 0.1N

Potassium chromate K2CrO7, FW
= 194.20, Eq. =32.4g/l
250ml 0.0167M = 0.81g = 0.1N
1 liter 0.0167M = 3.24g = 0.1N
(add a few mls dil. H2SO4 to clear)

Ammonium thiocyanate NH4CNS,
FW = 76.12, Eq. = 76.12g/l
250ml 0.1M = 1.9g = 0.1N
1 liter 0.1M = 7.6g = 0.1N

Potassium thiocyanate KCNS,
FW = 97.18, Eq. = 97g/l
250ml 0.1M = 2.4g = 0.1N (use 3g)
1 liter 0.1M = 9.74g = 0.1N (use 12g)

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Signature: Dhanlal De Lloyd, Chem. Dept, The University of The West Indies, St. Augustine campus The Republic of Trinidad and Tobago. Copyright: delloyd2000© All rights reserved.
 