Physical Chemistry Answers

0.25 mol of an ideal monoatomic gas undergoes isothermal expansion from a
volume of 2.0 dm3
to 10 dm3
at 27 oC. Calculate the maximum work that can be
obtained from this process.

State daltons law of partial pressure.derive its mathematical form.

At constant pressure, the   T diagram for a pure substance that sublimes is
(s = solid, l = liquid and g = gas)

What is the quantity of electricity needed to deposite 3.25g of silver from silver ion

Define solubility product constant and derive the relationships between solubility
and solubility product constants for salts of AB2, A2B types.

The reversible reaction, A(aq) + H2O(l) --> P(aq)
is first-order in A(aq) and P(aq), and pseudo-zero order in H2O(l). What must be
the most appropriate expression for the relaxation time, τ, when the reaction
returns to its equilibrium after a sudden increase in temperature?

the key answer is relaxation time=1/kf+kr but i don't know why the got rid of A with Kf and P with Kr

Explain the effect of common ions on the ionisation equilibria of weak acids with
the help of a suitable example.

Define degree of ionisation of a weak electrolyte and discuss the factors affecting
it

Differentiate between the following terms. Illustrate your answers. (5)
i) Soil profile and soil horizon
ii) Disintegration and decomposition in soil formation

For the hydrolysis of a salt of a weak acid and a weak base, show that
Kh=Kw/(Ka)(Kb)