A good way to remember all of these is that opposite phase changes have opposite energy needs. If you know that from solid to liquid to gas requires the addition of heat (endothermic), that means you know that
adjective /ˌendəʊˈθɜːmɪk/ /ˌendəʊˈθɜːrmɪk/(chemistry) (of a chemical reaction) needing heat in order to take place compare exothermic Take your English to the next level The Oxford Learner’s Thesaurus explains the difference between groups of sim...
代入该方程式和恒定压力下内能的定义(ΔE=qp+w)到焓变方程中得出: 其中qp是在恒定压力下的反应热。 因此,如果化学或物理过程是在恒定压力下进行的,而唯一的功是由膨胀或收缩引起的(PV功),则热流(q < / em>p)和该过程的焓变(ΔH)相等。 运行本生灯时散发的热量等于发生的甲烷燃烧反应的焓变,因为它发生...
Exothermic and Endothermic Processes When physical or chemical changes occur, they are generally accompanied by a transfer of energy. Thelaw of conservation of energystates that in any physical or chemical process, energy is neither created nor destroyed. In other words, the entire energy in the u...
Forum:Biology and Chemistry Homework Help C Why is ionization of sodium endothermic? Homework Statement State whether ionization is an endothermic or an exothermic process. The Attempt at a Solution I know what exothermic and endothermic mean, and I know that the answer is that ionization of sodiu...
(CT) steps. This mechanism prevails because the coupling matrix element of one-electron transfer is usually larger than that of two concerted electron transfers. The issue with exothermic CT-mediated TET, however, is that it often results in a large energy loss in the sensitization process27,28...