I have to prepare 1ppm of Fe+2 solution in 1litre. How many grams of ferrous ammonium sulphate will be dissolved in 1litre to make above solution.. plzz guide me

Answer 1

You want 1 ppm and that is 1 mg/L.
Convert 1 mg Fe^2+ to ferrous ammonium sulfate.
1 mg Fe^2+ x [molar mass Fe(NH4)2(SO4)2] = ?