Ime Remaining When a chemical reaction is at equilibrium the

Last updated: 5/5/2023

Ime Remaining When a chemical reaction is at equilibrium the concentrations of reactants and products do not change over time This is because the rate in th forward direction becomes equal to the rate in the reverse reaction Note that the rates are not zero So if more reactant is added the forward rates increases and more product is made If more product is added the reverse rate increases and more reactant is made Adding or removing reactant or product is called a stress The chemical reaction responds to the stress in such a way to minimize the stress as the reaction goes to a new point of equilibrium This is called Le Chatelier s Principle We ll use the following exothermic reaction where all are in the gaseous phase 2 NO 0 2 NO 114 kJ mol NO is added the NO will increase For example when result 2 NO 0 2 NO 114 kJ mol stress NO This can also be seen in the constant Keq which must remain a constant Keq NO 0 To reduce the effect of added NO NO will increase and 0 will decrease Answer the following questions about the reaction at equilibrium 2 NO 114 kJ mol 2 NO 0 What happens to the NO when NO is added What happens to the NO when NO is removed What happens to the NO when O is added What happens to the NO when O is removed