Organic Chemistry Answers

Which of the following statements pertaining to an SN2 reaction is INCORRECT? (1) The nucleophile attacks the carbon from the side of the molecule opposite the group being displaced, that is, opposite to the leaving group. (2) The rate of the reaction is dependent of the concentration of the nucleophile. (3) The reaction proceeds with simultaneous bond formation and bond breaking. (4) Bulky groups around the reaction site speeds up the reaction.  

Alkyl halides can undergo nucleophilic substitution reactions. Which of the following statements is CORRECT? (1) The second order nucleophilic substitution reactions involve inversion of configuration at the central atom. (2) Tertiary alkyl halides are unlikely to undergo SN1 type reactions. (3) Unless resonance stabilization is observed, primary alkyl halides are unlikely to undergo second order nucleophilic substitution. (4) The strength of the nucleophile does not play a role in the order of the nucleophilic substitution reaction. 

Which of the following reactions will NOT take place?  (1)  CH3CH2CH2BrNaN3ethanol -waterCH3CH2CH2N3 (2)  CH3CH2CH2BrNaIacetoneCH3CH2CH2I (3)  CH3CH2CH2BrCH3CH2CH2CH3NaSCH3 (4)  CH3CH2CH2BrCH3CH2CH2OCCH3OCH3CONaO

Giving reasons arrange the following in increasing order of their vO-H frequency: ethanol, trichloroacetic acid, acetic acid and chloroacetic acid

Calculate λmax for the following molecules using Woodward – Fiesher rule (i) (ii

Suppose you were attempting to synthesize 5.0g of lidocaine, using this reacción sequence (and the corresponding purification after each step). If each reaction produces the percent yield given, and each purification step produces only 90% recovery of the desired material, how many grams of each reagent do you need in order to end up with the desired mass?

Reaction 1 (72% yield):

C8H11N + C2H2OCl2 ----> C10H12NOCl + HCl

Reaction 2 (45% yield)

C10H12NOCl + C4H11N ----> C14H22N2O + HCl

The reaction with aqueous alkali is often written : Al + NaOH + H₂O → NaAlO₂ + 1.5 H₂

Calculate the amount of Aluminium required to react with 5kg of NaOH

 â€˜Undecane’ is a straight chain alkane containing how many carbon atoms?

CH4

Calculate the mass (in kg) of glucose that can be synthesized by a plant through photosynthesis when 2.49 x 104 kJ of sunlight energy is absorbed by the plant.