Physical Chemistry Answers

Consider a general reaction between A and B which proceeds via a transition state, X≠:

  A+ B = X# - products

Calculate the frequency factor, A, for each of the following reactions at 207 oC using 

the transition state theory: 

(i) A reaction between two atoms, A and B, forming a diatomic transition state, X≠. 

(ii) A complex reaction between two non-linear molecules A and B forming a non-linear 

transition state, X≠ 

Assume qT = 108; qR =10; qV = 1

Some acetone is poured into a thick-walled, 150 cm 3 test tube at 293 K and 100 kPa. The tube was then sealed and heated to 623 K. What is the maximum mass of acetone that can be used for this process if the pressure cannot exceed 5.00 MPa? The amount of air in the test tube can be neglected.

Diagrammatically show the molecular orbitals formed by the combination of two s atomic orbitals.

Calculate the initial mass of the hydrated cobalt (ii) chloride

A student has carried out a moving boundary experiment using K2SO4 as an electrolyte.

The data obtained was tabulated in the following Table.

Cation velocity 11.43 mms-1

Cross sectional area of tube 28.56 mm2

Transference number of cation 0.593

Anion concentration 0.025 mol dm-3

Calculate the current flow for the boundary moves as far as 45 mm

A student has carried out a moving boundary experiment using K2SO4 as an electrolyte. The data obtained was tabulated below:

Cation velocity: 11.43 mms-1

Cross-sectional area of tube: 28.56 mm2

Transference number of cation: 0.593

Anion concentration: 0.025 mol dm-3

Calculate the current flow for the boundary moves as far as 45 mm.

A concentration cell was constructed by immersing two silver electrodes in 0.05 M and 

1M AgNO3 solutions. Give the cell representation, write the cell reactions and calculate 

the emf of the cell.

The glucose solution (C6H12O6) in water freezes at a temperature of - 0.18 ° C. If the Kf of water is 1.86 ° C / molal.

Calculate how many grams of glucose dissolved in per liter of water… .. (Ar C = 12 g / mol, Ar H = 1 g / mol, Ar O = 16 g / mol).

A reaction of the type X→Y+ Zhas a rate constant k = 3.6 x 10-5M/s. Determine order of this reaction, and molarity of Xafter a reaction time of 30.0 min if the initial concentration of X is 0.096M

A student has carried out a moving boundary experiment using K2SO4 as an electrolyte. The data obtained was tabulated below:

Cation velocity: 11.43 mms-1

Cross-sectional area of tube: 28.56 mm2

Transference number of cation: 0.593

Anion concentration: 0.025 mol dm-3

Calculate the current flow for the boundary moves as far as 45 mm.