Based on the diagram, which statement explains how energy is conserved during this chemical reaction?
A
B
PA
с
Reaction progress
A. The potential energy lost during the formation of products (B) is
gained by the surroundings.
B. The potential energy lost by the reaction system (C) is also lost by
the surroundings.
C. The potential energy changes indicated by A and B show energy
that is lost by the surroundings.