Question

fill in every blank in the table and show your work how you get the answer for each.

CH2Cl2 + HCI biphenyl major organic product biphenyl + t-BuCI + Al (foil) — > 4,4%-di-tert-butylbiphenyl MW/ Conc 26.98 volume 0.35 mL density solid mass 0.16 g Theor etical Yield Theor etical Yield mmol equivalents 1.0 catalytic

Answer 1

Biphenyl: Mass = 0.169 Molar mass: 154.2 g/mol Moles of biphenyl = mass /molar mass = 0.16g/154.2 g/mol = 1.038*10^-3 mol = 1.038 mmol Tert. Butyl chloride: Volume = 0.35mL Density = 0.851 g/mL Mass = Density * volume = 0.851g/mL * 0.35mL = 0.298 g Molar mass: 92.57 g/mol Moles of biphenyl = mass /molar mass = 0.2989/92.57 g/mol = 3.219*10^-3 mol = 3.219 mmol As per the balanced equation 1 mole of biphenyl reacts with 2 moles of tert. butyl chloride. Hence as per number of mmol of reagents, tert. butyl chloride is an excess of reagent. Number of mmoles of product expected = 1.038 mmol Molar mass of product = 266.4g/mol Theoretical yield = 266.4 * 1.038*10^-3 = 0.277 g

biphenyi # -Buci + Alfoil) - > 4,4-di-tert-butylbiphenyi 26.98 MW/ Conc volume density 0.35 ml solid 0.851gm/L 0.298g Theo mass 0.16 g 0.277g Yipid immol 1.038 3.219 1.038 etical Yield equivalents 1.0 3.1 catalytic