At a given price,

At a given price, there is excess demand for a good. Explain how the equilibrium price will be reached.
or
Explain the sequence of changes that will take place when there is excess demand of , the commodity.

In a situation of excess demand, consumers are willing to buy greater amount of a commodity than what the producers are willing to sell. Accordingly, price of the commodity will be pushed up. This will cause expansion of supply and contraction of demand, until the equilibrium is restored.