1 ~g of silver gets distributed between 10 ~cm ³ of molten zinc and 100 ~cm ³ of molten lead at 800^ C . The percentage of silver still left in the lead layer is approximately

Step-by-step solution

Partition coefficient = Conc. of Ag in molten Zn Conc. of Ag in molten Pb Mass of Ag in lead at equilibrium =1-x Mass of Ag in Zn at equilibrium =x aligned 300 &= x / 10 1-x / 100 = 10 x 1-x 10 x &=300(1-x) 10 x &=300-300 x 310 x &=300 x &= 300 310 x &= 30 31 aligned Amount of silver in molten lead =1-x=1- 30 31 = 31-30 31 = 1 31 % of silver = 1 31 100 3 %