11. If the ionization (dissociation) constant of acetic acid is k_a, what will be the pH of a solution containing equal concentrations of acetic acid and sodium acetate?

What is the electronic configuration of chromium atom (Z = 24)? Give a reason for your answer.

i) State the second law of thermodynamics in terms of the entropy of the universe.

(ii) Calculate the maximum work that can be obtained from the given electrochemical cell constructed with two metals M and N.

The cell reaction is M + N⁺² → M⁺² + N

To precipitate group III cations NH₄Cl should be added to the solution before the addition of ammonium hydroxide. Explain why.

A study of chemical kinetics of the reaction A+B → products, gave the following data at 25°C:

Find:

(1) The order of reaction with respect to A.

(2) The order of reaction with respect to B.

(3) The rate law.