Chloride test Titration Method
Chloride Test apparatus Requirements
- 50 ml water sample
- Conical flask 250 ml
- 0.2N NaCl solution: Dissolve 1.17gm of dried NaCl into DM water to a final volume of 100mls. 0.02N NaCl solution : Pipette out 10ml of 0.2N NaCl solution to 100mls with DM water.
- Pottasiumdicromate indictor: Dissolve 5 gm potassiumdicromate in 100 ml of D.M water.
- 0.02 N AgNO3 Solution :Take 3.3580 gm of AgNO3 in the 1 lit. volumetric flask. Add DM water to 1000 ml mark in the flask.
Chloride Test Procedure
- Take 50 ml Sample in a 250 ml conical flask.
- Add 2 – 4 ml potassiumdicromate indicator and mix by stirring.
- Titrate against 0.02 AgNO3 solution.
- Check for the end point – Yellow to Brick color
Chloride Calculation:
Chlorides as Cl (ppm) = (TV X Normality of H2SO4 X 1000 X 35.5)/Sample volume
