Organic Chemistry Answers

Analyse the therapeutic or chemical effects of isomerism. Research the drugs thalidomide and ibuprofen, and their therapeutic effects. Both drugs have optical isomers: compare the structures and properties of the optical isomers in each case study. Explain why one of these drugs is only available as a single optical isomer whilst the other is sold as a racemic mixture (a 50:50 mixture of both optical isomers). Discuss the implications of having to separate a racemic mixture into its stereoisomers and the implications if the two stereoisomers are not separated, with reference to the two drugs in detail

1.Account with the aid of a detailed mechanism for the fact that addition of HCl to 1-bromopropene gives exclusively 1-bromo-1-chloropropane.

2.(S)-2-butanol slowly racemizes in dilute acid solution.Propose a mechanism.

3.Use the electronic factors to explain why hydrogen attached to a nitrogen of a sulfonamide is acidic.

CONDENSED STRUCTURAL FORMULA OF FOLLOWING THEN IDENTIFY IF IT IS ALKANE, ALKENE, ALKYNE.

1. 5,5 – diethyl – 3,3 – dimethyl – 1 - octyne

2. 2,4,4,6 – tetraethyl – 3,3 – nondiene

3. 1,1,4,4 – tetramethylheptane

For your experiments, you are required to dilute 8 mL of a glucose solution (molar mass = 180.156 g/mol) with a concentration of 0.25 mol L-1 to a volume of 0.5 L.

a) What is the concentration of the final, diluted solution?

b) How much solvent do you need to make this diluted solution of glucose? Express your answer in mL, to the nearest whole number.

c) After using all of your glucose solution in experiments you require another batch to continue your work. How many grams of glucose would you need to re-make the 0.25 mol L-1 solution?

Explain the sanger method of identification of N- terminal of a peptide

lesson 12 alkenes

name of each alkene and specify its configuration by the e,z system

A galvanic cell is constructed using the electrode based on the following half reactions:

Al3+(aq) + 3e-1 ---------> Al(s) -1.68 V

Mg2+(aq) + 2e-1 ---------> Mg(s) -2.37 V

(1) Write balance redox equation

(2) How many electrons are transferred?

(3) Write the cell notation

(4) Which is the anode?

(4) Which is the cathode?

(6) Which is the reducing agent?

(7) Which is the oxidizing agent?

Which substance is reduced?

Which substance is oxidized?

Calculate the cell potential

Given the following information: the mass of the solute is 53.1 g, the molar mass is 46.1 g/mol; the mass of the solvent is 146.9 g, the molar mass is 18.0 g/mol; the density of the pure solvent is 1.00 g/mL; the density of the solution is 0.950 g/mL. Calculate the MOLARITY (in mol/L) of the solution.

Consider the combustion reaction of the simple alkane, octane (C8H18), which is a major component of gasoline (the octane rating on the pump is a measure of the proportion of 8-carbon constitutional isomers to other alkanes in gasoline). Balance the combustion reaction of octane below: C8H18 + O2  H2O + CO2 2. (3 points) If one gallon of octane is burned with perfect efficiency, how many molecules of CO2 will be generated? (the density of octane is 0.703 g/mL; 1.00 gallon = 3.79 liters) 3. (3 points) If the half-life of CO2 in the atmosphere is 27 years, how long will it take for the CO2 released to be reduced by 75%?