An sample of NaCl with 50% purity is added into aqueous solution having excess AgNO 3 . AgCl precipitate is filtered , washed & dried weighing 2.87 gm. If the reaction yield is 20% then find the amo

Question

An sample of NaCl with 50% purity is added into aqueous solution having excess AgNO 3 ​ . AgCl precipitate is filtered , washed & dried weighing 2.87 gm. If the reaction yield is 20% then find the amount of sample. (Molar mass Ag = 108 gram / mol )

TestHub · Accepted Answer

NaCl + AgNO 3 ​ → AgCl + NaNO 3 ​ ​ n AgCl ​ = 143.5 2.87 ​ = 2 × 1 0 − 2 n NaCl ​ = 0.1 Wt NaCl = 58.5 × 0.1 = 5.85 wt sample = 11.7 gm ​

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