For a chemical reaction depicted in the diagram, which of the following does the dotted line represent?

http://gyazo.com/ff9484df7fda85ade61bc1f99d53457a

The temperature of the reactant mixture was increased.

A catalyst was added to the system.

The pressure of the reactant mixture was increased.

Reactants were added to the system.

Question

For a chemical reaction depicted in the diagram, which of the following does the dotted line represent?

http://gyazo.com/ff9484df7fda85ade61bc1f99d53457a

       The temperature of the reactant mixture was increased.

       A catalyst was added to the system.

       The pressure of the reactant mixture was increased.

       Reactants were added to the system.

anonymous · Answer

Activation energy is lower in the pathway shown by the dotted line. This indicates that a catalyst has been added to the system.

anonymous · Answer

A catalyst was added to the system.

anonymous · Answer

It sounds like there is an echo in the room.

anonymous · Answer

no its very easy question