What is the concept of chemical equilibrium?

chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. At equilibrium, the two opposing reactions go on at equal rates, or velocities, and hence there is no net change in the amounts of substances involved.

Why is chemical equilibrium needed?

Some chemical reactions happen spontaneously, like metal rusting. In equilibrium reactions, both products and reactants are always present. Equilibrium reactions in the human body are essential for life and can be exploited in chemical manufacturing as well.

What is chemical equilibrium in thermodynamics?

Chemical equilibrium is the thermodynamic equilibrium in a system where direct and reverse chemical reactions are possible. Therefore, the macroscopic parameters of the system do not change and the relationship between concentrations of reacting substances remains constant at a given temperature.

What is chemical equilibrium Class 11?

• Chemical Equilibrium. In a chemical reaction chemical equilibrium is defined as the state at which there is no further change in concentration of reactants and products. For example, At equilibrium the rate of forward reaction is equal to the rate of backward reaction.

What is an example of chemical equilibrium?

Examples of chemical equilibrium Hydrogen and iodine vapor are kept at a constant temperature in a closed vessel. The reaction proceeds to some extent and then stops, by converting some portion of the hydrogen and iodine to form hydrogen iodide.

What does shift in equilibrium mean?

“A system at equilibrium, when stressed, will shift to offset the stress” This means if we add reactant, equilibrium goes right, away from the reactant. If we add product, equilibrium goes left, away from the product. If we remove product, equilibrium goes right, making product.

What drives a chemical reaction?

When two molecules collide with the right orientation and sufficient force, a chemical reaction may result. Not all collisions cause reactions, however; the atoms or molecules must be able to recombine to form new compounds. Breaking bonds between atoms takes up energy, while forming new bonds releases energy.

What is chemical equilibrium and thermal equilibrium?

A mechanical equilibrium exists when all the mechanical forces within a system are balanced so that there is no acceleration. A thermal equilibrium exists within a system when the temperature is uniform throughout so that there is no heat transfer within the system.

What is equilibrium in chemistry class 12?

The equilibrium is a state in Chemistry in which there is no net change in the concentrations of reactants and as well as the products.