Group 7: Halogens

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I am investigating silver nitrate titrations of halide ions (sodium chloride, sodium bromide, sodium iodide). Both the halide solution and silver nitrate are 0.1 M approximately. How much silver nitrate would be need to titrate the halide solutions above? Which would need the most silver nitrate, and which would need the least?

Jenkin writes
 
One mole of silver ions (as in silver nitrate solution) reacts with one mole of halide ions, according to the ionic equation
 
Ag⁺ (aq)  + Hal^-(aq) -> AgHal (s)
 
So if the solutions are, as you say, 0.1 molar,  25.0 cm³ of a solution of each one of the halides would need 25.0 cm³ of silver nitrate solution - the same volume for all three!.

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updated: 20 August 2007