Enthalpies of Formation (Section)
Calcium carbide (CaC2) reacts with water to form acetylene (C2H2) and Ca(OH)2. From the following enthalpy of reaction data and data in Appendix C, calculate ΔHf° for CaC2(s):
CaC2(s) + 2 H2O(l) → Ca1OH22(s) + C2H2(g)
ΔH° = –127.2 kJ
Chapter 1 Notes Data Communications Networks Data Communications—the movement of computer information from one point to another by meals of electrical or optical transmission systems o Such systems called data communications networks o Telecommunications—broader term; includes transmission of voice and video as well as data and usually implies...