In a reverse reaction, products are formed from reactants and reactants are formed from products. when they yield the same amount, chemical equilibrium is reached it is called the law of mass action activation energy is released

A reversible reaction is a chemical reaction where the reactants form products and products react together with reactants to give the reactants back. When they yield the same amount, Reversible reactions will reach a chemical equilibrium in which the concentrations of reactants and products will no longer change.

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The diaphragm is what i think ur talking about

Abay where the river empties into the sea