Chemical equilibrium appears to be static but it is dynamic in nature. At microscopic level if we see inside an insulated flask in which no heat can enter and leave the flask. Flask is having same quantity of ice and water, we will observe that some molecules of ice are converting into water and other molecules of water are converting into ice. It means change occurs inside the flask but at normal level it appears static means no motion inside the flask. But actually it is dynamic in nature. Hence proved