Which profile best describes the reaction C(s) plus 2H2(g) CH4(g) H -74.9 kJ?

Answer 1

It is the graph where it starts of the Y-axis pretty high, then goes up a little bit, and down all the way to the x-axis. For me, it is Energy graph A.

Answer 2

This reaction represents the formation of methane (CH4) from carbon (C) and hydrogen gas (H2) with a heat release of -74.9 kJ per mole of methane formed. The negative sign indicates that the reaction is exothermic, meaning it releases heat energy during the reaction.