Calcium oxide and carbon dioxide combine to form calcium carbonate in the reversible reaction: CaO + CO2 ⇌ CaCO3 When the reaction is at dynamic equilibrium, which statement must be true?
the forward and reverse reactions have stopped.
the reaction has run out carbon dioxide or calcium oxide.
the concentration of calcium carbonste is increasing.
calcium carbonate and calcium oxide are formed at the same rate.
The correct statement is: calcium carbonate and calcium oxide are formed at the same rate.
At dynamic equilibrium, the forward and reverse reactions are still occurring, but at the same rate, resulting in no net change in the concentration of products or reactants.