tema+28+martie+2012

Ex 1 pag 75 a) slabe b) legatura de hidrogen, Van der Waals c) electrostatica, hidrogen, electroni, mare, mica d) atractie, polii, polare e) dispersie f )legatura de hidrogen  Ex 2 pag 75 b) HF,H2O, NH3 c) H2O, CH3OH, CH3NH2  Ex 3 pag 75

HF=-112 grade C;

HCl=-83 grade C.  Ex 4 pag 75 HF - legatura de hidrogen N2- forte de dispersie HCL- dipol-dipol Ex 5 pag 75 a) F2, Ar, H2 - Van der Waals - pentru ca se realizeaza in cazul moleculelor monoatomice, respectiv in cazul celor covalente nepolare c) H2O, HF, NH3 - legatura de hidrogen - pentru ca sunt puternic polarizate <span style="font-family: Arial,sans-serif; font-size: 10pt;">d) HCl, H2S, HI - legatura dipol-dipol - pentru ca se realizeaza intre molecule polare Ex 6 pag 75 Aceasta interactiune este de tip <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">Van der Waals Ex pag 75 <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">a) H2O <span style="font-family: Arial,sans-serif; font-size: 10pt;">b) Ar <span style="font-family: Arial,sans-serif; font-size: 10pt;">c) P4 <span style="font-family: Arial,sans-serif; font-size: 10pt;">d) HF Ex 10 pag 75 <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">a) H2, Cl2, H2O <span style="font-family: Arial,sans-serif; font-size: 10pt;">b) He, O2, P4 <span style="font-family: Arial,sans-serif; font-size: 10pt;">c) Vl2, Br2, I2 Ex 11 pag 75
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">Substanta || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Natura legaturii covalente

<span style="font-family: Arial,sans-serif; font-size: 10pt;"> din cadrul moleculei || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Polaritatea moleculei || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Interactiunea intermoleculara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Variatia punctului de topire ||
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">H2 || <span style="font-family: Arial,sans-serif; font-size: 10pt;">nepolara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">nepolara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Forte de dispersie || <span style="font-family: Arial,sans-serif; font-size: 10pt;"> In jos creste

<span style="font-family: Arial,sans-serif; font-size: 10pt;"> In sus descreste ||
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">O2 || <span style="font-family: Arial,sans-serif; font-size: 10pt;">nepolara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">nepolara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Forte de dispersie ||^  ||
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">HCl || <span style="font-family: Arial,sans-serif; font-size: 10pt;">polara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">polara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Dipol Dipol ||^  ||
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">H2O || <span style="font-family: Arial,sans-serif; font-size: 10pt;">polara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">nepolara || <span style="font-family: Arial,sans-serif; font-size: 10pt;">Legatura de H ||^  ||