Preparation and Standardisation 0.01 N Hydrochloric acid IH Volumetric Solution

1.  PREPARATION:

Dilute 0.85 mL of concentrated HCl with water to 1000 mL.

2. STANDARDISATION:

Weigh accurately about 0.0150 g of anhydrous Sodium carbonate (Na₂CO₃) previously heated at about 270°C for one hour. Dissolve it in 50 mL of water. Titrate against 0.01 N HCl potentiometrically.

Each 0.0005299 g of anhydrous sodium carbonate is equivalent to 1 mL of 0.01 N HCl.

Calculation:

Normality (N) = [0.01 x Weight of Na₂CO₃ (in g)] / [0.0005299 x Titration reading (in mL)]

Limit: 0.01 N ± 5 % (0.0095 N – 0.0105 N)

3. STORAGE CONDITION:

Preserve in glass-stoppered bottles.