Feasibility of Reactions Gibbs free energy The feasibility of a reaction is determined by two factors The?enthalpy?and?entropy change The two factors come together in a fundamental thermodyn...
Total Entropy Calculations If we take the reaction between sodium and chorine, we know that this is a very exothermic reaction and also involves a decrease in entropy as a solid is produced ...
作為AP科學類中的頂梁柱，AP物理可謂是撐起了科學類的半邊天。但是新手小白在剛開始面對4門AP物理時總是傻傻分不清楚：這幾門到底要學什么內(nèi)容，彼此之間又有哪些異同？在選擇的時候應(yīng)該如何做好取舍呢？ AP物理...
Introducing Entropy You may have wondered why it is that?endothermic?reactions occur at all, after all, what can be the driving force behind endothermic reactions if the products end up in a...
AP計算機既可以作為計算機專業(yè)的導(dǎo)論課，也可以作為其他專業(yè)學生成為當今信息社會入門課程之一。這也是很多同學選擇計算機這門科目的原因。2023年AP計算機科學A課程報名開啟！社會考生也可報名~ AP計算機科學A課...
Solution & Hydration Definitions Enthalpy of solution The?standard enthalpy change of solution (ΔHsol?)?is the enthalpy change when?1 mole?of an ionic substance?dissolves?in sufficient w...
Polarisation of Ions Theoretical lattice energies assume a perfect ionic model where the ions are 100% spherical and the attractions are purely electrostatic So overall, there has a been a c...
Born-Haber Cycles A?Born-Haber cycle?is a specific application of Hess’ Law for ionic compounds and enable us to calculate lattice enthalpy which cannot be found by experiment The basic prin...
Lattice Energy Lattice energy As with bond enthalpy,?lattice energy?(ΔHlatt?) can be expressed as a formation or dissociation process As a formation process, it is the enthalpy change when?1...
