   # Volumetric Analysis Standard solutions.

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## Preparation of 250ml 0.05M and 0.1N Volumetric analysis titration Standards

This page gives the weight of pure, dry salt required to make up A 250 ml volumetric analysis primary standard for each titration against acid base, permanganate, dichromate, iodine, sodium thiosulphate and silver nitrate. Concentrations are expressed in normality or molarity and given in values of 0.1N, 0.05M, or 0.002M.

Example for the info on this page:

 Sodium carbonate Na2CO3, FW = 106, 1M = 106g/l Eq.wt. = 53g/l = 1N = 0.5M 1 liter = 5.30g/l = 0.1N = 0.05M 250ml = 1.325g = 0.IN or 0.05M std. soln.

 In this example, the FW or Formula weight (Molecular weight) of the salt is 106. Eq.wt. is the Equivalent Weight which is 53 grams per liter. And 1.325 grams (g/l divided by 4) dissolved up to mark in 250 ml volumetric flask will give a 0.1N standard solution or a 0.05M standard solution.

## Acid / Base Titrations

 Ammonium sulphate NH4)2SO4. FW = 132.14, 1M = 132.14g/l Eq.wt. = 66.07g/l = 1N = 0.5M 1 liter = 6.607g/l = 0.1N =0.05M 250ml = 1.652g = 0.IN or 0.05M std. soln. Adipic acid HO2C(CH2)4CO2H FW = 146.4, 1M = 146.4g/l Eq.wt. = 73.03g/l =1N = 0.5M 1 liter = 7.303g/l = 0.1N = 0.05M 250ml = 1.83g = 0.1N or 0.05M std. soln. Barium hydroxide Ba(OH)2.8H2O, FW = 315.48, 1M = 315.48g/l Eq.wt. = 157.5g/l = 1N or 0.5M 1 liter = 15.75g/l = 0.1N = 0.05M 250ml = 3.94g =0.1N or 0.05M std. soln. Benzoic acid C6H5COOH, FW = 122.12, 1M = 122.12g/l Eq.wt. = 61.06g/l = 1N = 0.5M 1 liter = 6.106g/l = 0.1N = 0.05M 250ml = 1.52g = 0.1N or 0.05M std. soln. Calcium carbonate CaCO3, FW = 100.00, 1M = 100g/l Eq.wt. = 50g/l = 1N = 0.5M 1 liter = 5.0g/l = 0.1N =0.05M 250ml = 1.25g = 0.IN or 0.05M std. soln. Furroic acid FW = 112.08, 1M = 112.08g/l Eq.wt. = 112.08 = 1N = 1M 1 liter = 11.2g/l = 0.1N =0.1M 250ml = 2.8g = 0.IN or 0.1M std. soln. Hydrochloric acid HCl, FW = 36.5, Density = 1.2 1M = 83mls = 1N = 1M (Use 86mls) 250ml = 2mls = 0.1N = 0.1N 1 liter = 8.6mls = 0.1N or 0.1M soln. Oxalic acid H2C2O4.2H2O, FW = 126.07, 1M = 126.07g/l Eq.wt. = 63.03g/l = 1N = 0.5M 1 liter = 6.303g/l = 0.1N =0.05M 250ml = 1.575g = 0.IN or 0.05M std. soln. Potassium hydrogen phthalate KH(C8H4O4), FW = 204.23, 1M 204.23g/l Eq.wt. = 204.23g/l = 1N = 1M 1 liter = 204.23g/l = 0.1N =0.1M 250ml = 5.105g = 0.IN or 0.1M std. soln. Potassiun hydrogen iodate KH(IO3)2, FW = 389.92, 1M = 389.82g/l Eq.wt. = 77.98g/l = 1N = 0.2M 1 liter = 7.798g/l = 0.1N =0.02M 250ml = 1.95g = 0.IN or 0.02M std. soln. Sodium carbonate Na2CO3, FW = 106, 1M = 106g/l Eq.wt. = 53g/l = 1N = 0.5M 1 liter = 5.30g/l = 0.1N =0.05M 250ml = 1.325g = 0.IN or 0.05M std. soln. Sodium hydroxide NaOH, FW = 40, 1M = 40g/l Eq.wt. = 40.00g/l = 1N = 1M 1 liter = 4.0g/l = 0.1N =0.1M 250ml = 1.00g = 0.IN or 0.1M std. soln. Sodium oxalate Na2C2O4, FW = 134.00, 1M = 134g/l Eq.wt. = 134g/l = 1N = 1M 1 liter = 13.40g/l = 0.1N = 0.1M 250ml = 3.35g = 0.IN or 0.1M std. soln. Sodium tetraborate NaB4O7.10H2O, FW = 381.37, 1M = 381.37g/l Eq.wt. = 190.685g/l = 1N = 0.5M 1 liter = 190.68g/l = 0.1N = 0.05M 250ml = 4.767g = 0.IN or 0.05M std. soln. Succinic acid HO2CCH2CH2CO2H, FW = 118.09, 1M = 118.09g/l Eq.wt. = 59.045g/l = 1N = 0.5M 1 liter = 5.9.045g/l = 0.1N = 0.05M 250ml = 1.475g = 0.IN or 0.05M std. soln. Sulphamic acid H2NSO3H, FW = 97.09, 1M = 97.09g/l Eq.wt. = 97.09g/l = 1N = 1M 1 liter = 9.709g/l = 0.1N =0.1M 250ml = 2.427g = 0.IN or 0.1M std. soln. Sulphuric acid H2SO4, FW = 98.08, Density = 1.8 1 liter = 56mls = 2N = 1M 1 liter = 28mls = 1N = 0.05M 1 liter = 2.8mls = 0.1N or 0.05M (use 3 mls) 250ml = 0.7mls = 0.1N = 0.05M std. Tris (hydroxymethyl)-aminomethane H2N.C(CH2OH)3, FW = 121.14, 1M = 121.14g/l Eq.wt. = 121.14g/l = 1N = 1M 1 liter = 12.114g/l = 0.1N = 0.1M 250ml = 3.023g = 0.IN or 0.1M std. soln.