Question

Student Class Number CHEMISTRY 1211 Chapter 9 Quiz DUE DATE: Thursday, 04/12 (BEFORE CLASS) Name (Last) (First) Section 72 (11:00-12:15 pm) Place answers in Answer Blank 1. Place the following in order of decreasing magnitude of lattice energy. (EXPLAIN K20 Rb2S Li20 A) Li2o K20 > Rb2:s B) Li20> Rb2S> K20 C) Rb2s > K20 > Li20 D) Rb2s > Li2o> K20 E) K20> Li20 >Rb2s Answer: Use the data given below to construct a Born-Haber cycle to determine the electron affinity (SHOW ALL VORK-LABELING EACH STEP AS TO W?AT ?T ?S) 2. DH°(kJ) 89 419 193 K(s) K(g) Br2(/) ? 2 Brig) K(s) + Br2(g) ? KBr(s) -394 KBr(s) ? K+(g) + Br(g) A)-885 kJ B)-325 kJ C)+367 kJ 674 Answe D) -464 kJ E) +246 kJ 3. Identify the number of bonding pairs and lone pairs of electrons in water. (SHOW BYA ELECTRON DOT DIAGRAM FOR WATER! A) 1 bonding pair and 1 lone pair B) 1 bonding pair and 2 lone pairs C) 2 bonding pairs and 2 lone pairs D) 2 bonding pairs and 1 lone pair E) 3 bonding pairs and 2 lone pairs Ans (SHOW HOW YO CALCULATE TH 4. Choose the best Lewis structure for OoCI2 CORRECT ELECTRONS TO BE USED.)

Answer 1

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