2 moles
Br2≡1 mole 1,1,2,2-tetrabromopropane
mole
Br2 ≡× mole 1,1,2,2-tetrabromopropane
But yield of reaction is only
27%Moles of 1,1,2,2-tetrabromopropane
=×× Molar mass of 1,1,2,2-tetrabromopropane
=360g Mass of 1,1,2,2tetrabromopropane
=×××360g≈3×10−1g