Chemistry Answers

1. Draw the molecular orbital diagram for F₂ molecule. Calculate the bond order and predict its magnetic property.

1. Describe bonding in [Mn (CN)₆]^3- using VBT

           State the hybridisation state of the metal, predict the geometry and magnetic property of the complex

Sodium chloride is produced from its elements through synthetic reaction. What mass of each reactant would be required to produce 25.0 mol of sodium chloride

Use the localised electron model to describe the bonding in hydrogen cyanide and phosgene (COCl2)

the class of drugs called statins reduced blood cholesterol levels by

For each reaction below, indicate in which direction the equilibrium shifts when the stated stress is applied to the system. Write R if the reaction shifts to the right, L if the reaction shifts to the left, or NC if there is no change.

A. Reaction: PCl5(g) <==> PCl3(g) + Cl2 + heat

Stress: temperature increase

B. Reaction: CO(g) + Fe3O4(s) <==> CO2(g) + 3FeO(s)

Stress: volume. Increase

C. Reaction: C2H2(g) + H2O(g) <==> CH3CHO(g) + heat

Stress: temperature decrease

D. Reaction: 2NO(g) + H2(g) <==> N20(g) + H2O(g) + heat

Stress: volume decrease

E. Reaction: Heat + H2(g) + l2(g) <==> 2Hl(g)

Stress: temperature decrease

F: H2(g) + Cl2(g) <==> 2HCl(g) + heat

Stress: volume decrease

At 773K, the reaction 2NO(g) + O2(g) ==> 2NO2(g) produces the following concentrations:

[NO] = 3.49x10^-4 M; [O2] = 0.80 M; [NO2] = 0.25 M.

A. What is the equilibrium expression for the reaction? Show your work.

B. What is the equilibrium constant for the reaction? Show your work.

Consider the reaction below at 25° C for which ΔS = 16.1 J/K. Show your work.

CH4 (g) + N2(g) + 163.8 kJ ==> HCN(g) + NH3(g)

At what temperature will this reaction be spontaneous?

For each of the following molecules, write the Lewis structure(s), predict the molecular structure (including bond angles), give expected hybrid orbitals on the central atom, and predict the overall polarity.

a. OF2 b. AsF5 c. IF5

Use the localised electron model to describe the bonding in hydrogen cyanide and phosgene (COCl2)