Video solusi : Perhatikan gambar berikut. Maka, berapa besar reaksi digambar...
2 NO(g)+O_(2)(g) -> N_(2) O_(4)(g) Delta H=a k J
NO(g)+(1)/(2) O_(2)(g) -> NO_(2)(g) Delta H=b k J
Besarnya Delta H reaksi : 2 NO_(2)(g) -> N_(2) O_(4)(g)
a. (a+b) k J
d. (a+2 b) kJ
b. (2 a+b) k J
e. (a-2 b) kJ
c. (-a+2 b) k J