Answer :
Reversible reactions have specific characteristics that differentiate them from irreversible reactions. Here are the true statements about reversible reactions:
a) The forward and reverse reactions occur at the same time:
In reversible reactions, both the forward and reverse reactions happen simultaneously. This means that reactants are converting into products while products are also converting back into reactants.
c) Only some reactions are reversible:
Not all reactions are reversible. Reversible reactions are characterized by being able to proceed in both the forward and reverse directions under certain conditions.
In contrast, the following statement is not true:
b) Eventually, reversible reactions favor one direction and end up forming more products or reactants:
Reversible reactions do not necessarily favor one direction over the other. Instead, they reach a state of dynamic equilibrium where the rates of the forward and reverse reactions are equal, leading to a constant concentration of both reactants and products.
The statement d) "Reactants are converted fully to products, and then products can convert back to reactants" is not entirely accurate as it oversimplifies the dynamic nature of reversible reactions.
