Physical Chemistry Answers

The net energy of a system of two atoms is given by
E(r)=-A/r^2 + B/r^8
where r is
the inter-atomic separation. If in a stable molecule the interatomic separation is 0.5
nm and the dissociation energy is 4.0eV, calculate the constants A and B.

In an orthorhombic crystal a lattice plane makes intercepts of 2a, 3b and 4c on the
three axes. Write down the Miller indices for this plane.

Explain the principles of radioactive dating?

Differentiate between chemical cells and concentration cells giving suitable
examples.

Describe Rast method of determination of relative molecular mass. Also write the
equation used giving significance of the terms involved.

What is the expected major product arising from the reaction 4,4- dimethylcyclohexene with bromine ?

Derive the relation between ∆rU and ∆rH for a chemical reaction. How is this
relation given for the condensed phases and ideal gases?

Different following terms
(I) molar magnetic susceptibility
(ii)choral carbon

The total number of subshells in fourth energy level of an atom is

Give an example each for nuclear transmutation reactions of the type
(, ), (, p), (p – ), (p, ), (p, ).