HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

Derive the relation between `DeltaG^@`and equilibrium constant (K) for the reaction -

aA_bB ⇌ cC+dD.​

Write chemical reactions involved in Van Arkel method for refining Titanium

Explain the relationship between Gibb's standard energy change of the reaction and equilibrium constant.

The following electronic configuration of elements shows highest oxidation state

Name the radioactive element in lanthanoids.

Give the electronic configuration of europium (Z = 63).

Explain the trend in an Oxidation state of 3d elements.

Give the properties of Lanthanoids.

Give the electronic configuration of gadolinium (Z = 64).

Write expected and observed electron configurations of ₅₈Ce.

Eu (Z = 63) and Yb (Z = 70) show + 2 oxidation state. Explain.

What are the physical properties of lanthanoids?

Write two uses of lanthanoids.

Define actinoid contraction.

State Third law of thermodynamics. Give ‘two’ uses.

No machine has an efficiency unity', is stated in-

(a) first law of thermodynamics

(b) second law of thermodynamics

(c) third law of thermodynamics

(d) Hess' law of constant heat summation

Give two uses of the Third law of thermodynamics.

Write two applications of lanthanoids.

Distinguish between lanthanoid and actinoids.

Write four points of distinction between Lanthanoids and Actinoids.