Question

why nitrobenzene is added in sodium chloride assay
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Answer 1

Answer:

Hello mate

Explanation:

. In the volhard method chlorides are first precipitated with excess silver nitrate ,then excess silver is titrated with potassium (or sodium) Before titration we add some small volume of heavy organic liquid that is not miscible with water( like nitrobenzene ,chloroform or corbon tetrachloride)

Answer 2

Explanation:

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The nitro benzene or dibutyl phthalate is added to coagulate the silver chloride precipitate so that it will not interfere with the titration of excess of silver nitrate by forming a layer over silver chloride and this avoids the need for filtration.