Forum

Determinants

If A is a 3×3 matrix such that det(A) = 5, find the value of det(3A).

Matrices

If A and B are two square matrices of order 3 such that AB = BA = I, where I is the identity matrix, show that B is the inverse of A.

Hydrocarbons

11. Explain Markovnikov’s rule with an example. Why is this rule important in the addition reactions of alkenes?

Equilibrium

• What is the equilibrium constant? How does it vary with temperature for an exothermic reaction?

Thermodynamics

Define enthalpy and internal energy. How are they related in a chemical reaction?

Chemical Bonding

Explain the concept of hydrogen bonding. How does hydrogen bonding affect the physical properties of compounds?

Structure of Atom

Describe the Bohr model of the atom. How does it explain the stability of an atom?

Polymers

Define polymers and explain the difference between addition and condensation polymers. Give an example of each type.

Carboxylic Acids

Discuss the acidic nature of carboxylic acids. Why are carboxylic acids more acidic than alcohols?

Aldehydes and Ketones

Explain the concept of nucleophilic addition reactions in aldehydes and ketones. Provide an example of a reaction showing nucleophilic addition.