Please write clearly and explain where necessary! Thanks! True or False 1. Decre
ID: 837631 • Letter: P
Question
Please write clearly and explain where necessary! Thanks!
True or False 1. Decreasing the energy of activation increases the rate of reaction 2. An alkene can function as an electrophile 3. 2-ethyl-2-butene is the correct name based on IUPAC nomenclature rules 4. Increasing the free energy of the products increases the rate of the reaction 5. The of a constant is not dependent on the concentration of de rate the reactants 6. 2,3-dimethyl-2-pentene is more stable than 3,4-dimethyl-2-pentene. 7. The reaction of HBr with methylcyclohexene is more highly regioselective than is the reaction of HBr with 1-methylcyclohexene. 8. The addition of HBr to 3-methyl-2-pentene is a stereospecific reaction 9. The addition of HBr to 3-methy-2-pentene is a regioselective reaction 10. 1-Butyne is more acidic than 1-butene 11. An sp2 carbon is more electronegative than an sp3 carbon 12. The reactions of internal alkynes are more regioselective than the reactions of terminal alkynes 13. Sec-butylisobutylacetylene contains 2 tertiary carbons and 1 secondary carbon 14. dichlorocyclobutane and trans-1,2-dichlorocyclobutane have different boiling points 15. All chiral compounds with the R configuration are dextrorotatorExplanation / Answer
1. TRUE. This is the principle how a acatalyst works. Activation energy is represented as a hump in energy vs. reaction progress plot, that the reactants has to overcome in order to form products.
2. FALSE. The pi electrons of double bond are labile, so they can act as a nucleophile by donating those electrons.
3. FALSE. IUPAC name is 2-methyl but-2-ene
4. TRUE. Because if the product has higher free energy, it will be less stable. So the product formation will be kinetically favored.
5. FALSE. Actually this holds true for 1st order reaction only. For all other reaction orders, rate constant has a unit of M-(n-1)sec-1 where n is the reaction order.
6. TRUE. Alkyl group stabilizes sp2 hybridized carbon.
7. TRUE. This can be explained by Markonikov's rule which states that