Organic Chemistry Answers

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%?

Pinnacole rearrangement

A breathalyzer test is used to detect drunken drivers. The crystals used will change colour, from orange to dark green, if ethanol vapour is detected. Explain the colour change and give a suitable equation for the reaction.

Yeast is a unicellular organism, which can break glucose down anaerobically (without oxygen). Discuss with suitable equations how yeast can be used to produce ethanol, wine and rum.   

1.     Using 1-butene as the only organic starting material, outline how each of the following compounds might be synthesized from it, stating clearly the reaction conditions in each case.                         

a.      2-butanol

b.     2-butanone

c.      Butane

d.     1,2-Dichlorobutane