JAMB - Chemistry (2007 - No. 16)
C\(_2\)H\(_4\)(g) + H\(_2\)(g) → C\(_2\)H\(_6\)(g) ΔH = -137kJ mol-1
The reaction represented above is
The reaction represented above is
exothermic
spontaneous
endothermic
in equilibrium
Vysvětlení
Since ΔH has a negative value, it implies an exothermic reaction, which means a lot of heat is being liberated or evolved from the system to the environment.