How to make solution of Pb of 250mg/kg for soil from lead acetate trihydrate, Pb(CH3COO)2 · 3H2O.?

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C.A. (Kees) Kan

The molecular weight of your molecule is Pb (207) + Acetate 2x (118) + water 3x (54) = 379. Thus the part of lead in this molecule is 207/379 = 0.546. So, to get a solution of 250 mg/l water you have to add 250 x 1/0.546 = 458 mg of the leadacetate trihydrate to 1 l of water.

Lydia Hernandez Rivera

Or you can make 500ml and you weigh 228.8mg of the leadacetate trihydrate to 0.500 l of distilled water.

Hanish Sethi

Thankyou so much for your answers C.A. (Kees) Kan Lydia Hernandez Rivera can you please tell me about how to make required solution which i mentioned before from the stock solution of lead acetate trihydrate