An sample of NaCl with 50% purity is added into aqueous solution havinig excess `AgNO_(3)`. AgCl precipitate is filtered, washed and dired weighing 2.87gm. If the reaction yeild is 20%, then find the amount of sample.

20g of impure NACI smaple is added aqueous solution having excess AGNO_(3)AgCI precipitate is filtered [Atomic mass Ag = 108, CI = 35.5] .

20g of impure NACI smaple is added aqueous solution having excess AGNO_(3)AgCI precipitate is filtered [Atomic mass Ag = 108, CI = 35.5] .

When 1. mole of [Cr(NH_(3))_(4)Cl_(2)]Cl is added to excess of AgNO_(3) solution the weight of AgCl precipitated is

A 200 gm sample of CaCO_(3) having 40 % purity is heated. Find moles of CO_(2) obtained.

An aqueous solution of (PdCl_2) 4NH_3 when treated with excess of AgNO_3 precipitated 2 moles of AgCl .Predict the secondary valency of the compound.

A" " 0.2g sample , which is mixture of NaCl, NaBr and NaI was dissolved in water and excess of AgNO_(3) was added. The precipitate containing AgCl,AgBr and AgI was filtered, dried and weighed to be 0.412g . The solid was placed in water and treated with excess of NaBr , which converted all AgCl into AgBr . The precipitate was then weighed to be 0.4881 g . It was then placed into water and treated with excess of NaI , which converted all AgBr into AgI . The precipitate was then weighed to be 0.5868 g . What was the percentage of NaCl, NaBr and NaI in the original mixture :