A diagram of the Born-Haber cycle for the standard enthalpy change of formation of lithium fluoride.
Hess's Law of Heat Summation allows us to imagine a path for ionic bond formation in NaCl, for example, involving simply inputing energy to remove an electron from sodium and donating it to chlorine. The change in system energy that occurs in combining a chlorine atom and a sodium atom to form NaCl equals the sum of the ionization energy of Na and the electron affinity of Cl.
 The WikiPremed MCAT Course is a comprehensive course in the undergraduate level general sciences. Undergraduate level physics, chemistry, organic chemistry and biology are presented by this course as a unified whole within a spiraling curriculum. Please read our policies on Privacy and Shipping & Returns. Contact Us. MCAT is a registered trademark of the Association of American Medical Colleges, which does not endorse the WikiPremed Course. WikiPremed offers the customers of our publications or our teaching services no guarantees regarding eventual performance on the MCAT.
WikiPremed is a trademark of Wisebridge Learning Systems LLC. The work of WikiPremed is published under a Creative Commons Attribution NonCommercial ShareAlike License. There are elements of work here, such as a subset of the images in the archive from WikiPedia, that originated as GNU General Public License works, so take care to follow the unique stipulations of that license in printed reproductions. |