JAMB - Chemistry (2001 - No. 23)
C(s) + 2S(g) → CS\(_2\)(g)
ΔH = +89 kJ mol-1
The chemical equation above implies that
ΔH = +89 kJ mol-1
The chemical equation above implies that
each of carbon and sulphur has 89 kJ of energy
both carbon and sulphur contribute 89 kJ of energy
89 kJ of energy is released
89 kJ of energy is absorbed
解释
ΔH = + 89kJ means it is an endothermic reaction. However, endothermic reaction is one in which heat is absorbed into the system from the surrounding.