Answer
The symbol (→) means that the reaction occur in one direction (irreversible process).
The double arrows symbol describes the reversible process, meaning that both the forward process and the reverse process can occur.
Work Step by Step
In the irreversible reactions, reactants react completely to yield products, for example all natural processes are irreversible.
The reversible reactions involve equilibrium, meaning that reactants and products are formed in a continuous way.
