Question

The graph (2) tells us that:

• A. The reaction is irreversible
• B. The reaction is reversible
• C. The reaction is exothermic
• D. The reaction is endothermic

Answer 1

The correct option is B The reaction is reversible

The reaction is reversible.
Over a period of time, the reactant concentration decreases reach a minimum value and remain constant. The product concentration increases reach a maximum value and remains constant.
In case of an irreversible reaction, over a period of time, the concentration of limiting reactant decreases until it becomes zero. The product concentration increases and reaches a maximum value.