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why lead acetate s used in the Limit test of Arsenic?
what role Lead Acetate plays????

why lead acetate s used in the Limit test of Arsenic? what role Lead Acetate plays????..

Answer / dr. a. bera, cdl

During limit test for As, Zn & conc HCl is used. if H2S formed the reaction with Lead Acetate gives lead sulphide.If it is not used then it reacts with mercuric bromide gives yellow stain.

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