Results for the formation of triphenylmethyl bromide Initial mass of triphenylmethanol (in g) = 0.208 g
Initial amount of triphenylmethanol (in mol) = 0.00079 mol
Initial volume of 33% HBr solution (in mL) = 0.6 mL
Initial mass of 33% HBr solution (in g; d = 1.354 g/mL) = 0.81 g
Initial mass of HBr (in g) = 0.27 g
Initial amount of HBr (in mol) = 0.0033 mol
Limiting reagent
Theoretical yield of triphenylmethyl bromide (in mol)
Final mass of triphenyl bromide (in grams) = 0.077 g
Final amount of triphenyl bromide (in mol) = 0.00024 mol
% yield
Results (color observed) of Beilstein test in part A = Blue green
Show all calculations.
Initial amount of triphenylmethanol in moles: 0.208 g / 260.3 g/mol = 0.00079 mol
Initial mass of 33% HBr solution = 0.6 mL HBr solution x 1.354 g/mL = 0.81 g
Initial mass of HBr = 0.81 g x .33 = 0.27 g HBr
Initial amount of HBr (in mol) = 0.27 g / 80.91 g/mol = 0.0033 mol
Final amount triphenyl bromide in mol = 0.077 g / 323.23 g/mol = 0.00024 mol