ocr: ch112 1985 quiz 2 page 4 4. (20 points) (a) Estimate the energy change (in kJ) for the reaction below: (Bond Energies in kJ/mole: C-H * 420, C1-C1 : 240; C-C1 * 330; H-C1 : 430) CH4l9) + 3 C1219) 1 CH C13(9) + 3 HC1(g) (b) Estimate the energy change (in electron volts) for the formation of the ion-pair from the atoms Kig) + c1(g)->r'ci Some Constants You May Need h-6.6 X 10-34 joule-sec '2(K) : 4.3 ev c3.0x x 108 m/sec Electron Affinity A (C1) 40 ev 18.1 10-10, "O(KCI) 3.13 lev.1 1.6 X 10-19 joules Electronic charge : 1.6 X - 10-19c
