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[amateen]

Please some body help me to guide to use right formula to calculate chloride content in a material.

Silver nitrate VS(0.1N) was added in sample solution in both blank and sample. Excess silver nitrate was titrated with 0.1 N amonium thiosulfate VS using ferric amonium sulfate as indicator. Equivalent factor is 3.545mg of chloride for eaach ml of .1 N silver nitrate.

 

Will this be the formula

(blank-sample)(AgNo3 factor)(NH4SON factor)(3.545)/weight of sample

 

I shall be very thankfull is some one can help

 

amy