11.

Calculate the emf of the following cell at 25°C: 

 

Given E°_cell = + 0.46 V and log 10ⁿ = n

The rate of a reaction becomes four times when the temperature changes from 293 K to 313 K. Calculate the energy of activation (E_a) of the reaction assuming that it does not change with temperature.

[R = 8·314 J K^-1 mol^-1, log 4 = 0·6021]

For the complex [NiCl₄]^2-, write

(i) The IUPAC name.

(ii) The hybridization type.

(iii) The shape of the complex.

(Atomic no. of Ni = 28)

What is meant by crystal field splitting energy? On the basis of crystal field theory, write the electronic configuration of d⁴ in terms of t_2g and e_g in an octahedral field when

(i)₀ > P

(ii) ₀ < P

Give reasons for the following:

(i) Oxygen is a gas but sulphur is solid.

(ii) O₃ acts as a powerful oxidising agent.

(iii) BiH₃ is the strongest reducing agent amongst all the hydrides of Group 15 elements.

Which aerosol depletes ozone layer?

Ethanal is soluble in water. Why?

Write the IUPAC name of the following compound:

Write the name of linkage joining two amino acids.