Question

According to Table I, which equation represents a change resulting in the greatest quantity of energy released?
A. 2C(s)+3H2(g) -> C2H6(g)
B. 2C(s)+2H2(g) -> C2H4(g)
C. N2(g)+3H2(g) -> 2NH4(g)
D. N2(g)+O2(g) -> 2NO(g)

Answer 1

Have you taken a look at the table? The answer is basically right there. Just make sure that you know that since they want the greatest quantity of energy RELEASED, the enthalpy (delta h) should be negative.