Question

CHM 235LL: Synthesis of Cyclohexene Prelab Questions 1. For the reaction shown below, calculate the theoretical vield if 5.00g of isopropanol is dehydrated with 2.5mL of concentrated H2SO. (density = 1.80g/mL.) to yield 3.05g of propene. Show all work for full credit, and include units! H, SO нурон нус сн, 2. Acid dehydrations often occur through what type of mechanism? What are some major factors that push the reaction through this mechanism, as compared to other types of mechanisms? 3. What is the mole ratio of the organic product(s) to reactant(s) for the following reaction? excess H2SO4

Answer 1

H2SO4 yechach molecular Formula man: C₂H₂0 346 - Molecular weight i 42 5 om o isopropanol then theoretrcal If we take Yleld is - - 60 = 42 (cross multiplication 5x42 60 Theoretical = 3.5 am Yield How practical yield = 3.05 gm. 7 practical yield practical yield Theoretical field - Xeo 7. Vield - 87.14% xoo 3 .5 ② Acid catalysed dehydration takes place through El mechanism . Here Carbocation is formed in the 1st step followed by formation of double bond takes place! on H₂SO4 product

Reaction: excess on the sou mole ratio is the ratio between the amounts In moles of any two compounds involved in a Chemical reaction. More ratios are used as conversion factors between products f reactants In many chemisty problems. mole ratio in this reaction ir - 1.164120₂ IC6H6 mole ratio = I mole 6H 1203 - I mole (646