su04final - 1 What is the formal charge on P in PCl5? A. 5...

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1 What is the formal charge on P in PCl 5 ? A. 5 B. 2 C. 0 D. 1 E. -1 2 Which species is correctly shown in its ground state? A. Cu: [Ar] 3d 4 4s 2 B. V 2+ : [Ar] 3d 1 4s 2 C. Fe 2+ : [Ar] 3d 6 D. Cl - : [Ne] 3s 2 3p 5 4s 1 E. Pb: [Xe] 4f 14 5d 10 6s 2 6p 4 3 Which of the following isn’t a strong acid? A. HCl B. HBr C. H 2 SO 4 D. HF E. HNO 3
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4 Which compound or ion is a radical? A. NO 3 B. NO 3 - C. Cl 2 D. N 2 E. SO 4 2- 5 Which of the following are resonance hybrids of SO 2 ? I. O S O O S O .. .. .. .. .. : .. .. .. .. .. : II. O S O O S O .. .. .. .. .. : .. .. .. .. .. III. O S O S O O .. .. .. .. .. : .. .. .. .. .. : A. I only B. I and II C. II only D. III only E. All three 6 Which bond is most polar? A. C-H B. O-H C. N-H D. O-C E. O-N
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7 Given the following information: CaCO 3 (s) CaO(s) + CO 2 (g) H& = 178.1 kJ C(s) + O 2 (g) CO 2 (g) H& = -393.5 kJ Determine H& for the reaction CaCO 3 (s) CaO(s) + C(s) + O 2 (g) A. 571.6 kJ B. 215.4 kJ C. -215.4 kJ D. -571.6 kJ E. 7.01±10 4 kJ 8 Which statement best reflects how a hypothesis should relate to the observations that gave rise to it? A. The simplest explanation that accounts for all the data is the best hypothesis. B. The explanation that turns out to be true is the best hypothesis. C. The explanation that can²t be disproved is the best hypothesis. D. The observation must prove the hypothesis. E. The observation doesn²t need to relate to the hypothesis. 9 What orbitals overlap to make the C-C bond in peroxyacetic acid? HC H H C O O O H A. sp 3 -sp 3 B. sp 2 -sp C. sp 3 -sp 2 D. sp 3 -sp E. sp 2 -sp 2
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10 Calculate the lattice enthalpy of calcium chloride from the following data. H sub (Ca) = 178 kJ/mol, I 1 (Ca) = 590 kJ/mol, I 2 (Ca) = 1150 kJ/mol, H f &(Cl(g)) = 122 kJ/mol, E a (Cl) = -349 kJ/mol, H f &(CaCl 2 (s)) = -796 kJ/mol A. -3656 kJ/mol B. -2064 kJ/mol C. -2260 kJ/mol D. -2487 kJ/mol E. -668 kJ/mol 11 How many σ -bonds, π -bonds and lone pairs are there in the following compound? N C C N C C H H H H .. .. σ π lone pairs A. 7 3 2 B. 10 3 2 C. 7 6 4 D. 7 3 4 E. 10 2 3 12 When the pressure of a gas is doubled and its temperature is decreased by one third, by what factor does the volume change?
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This note was uploaded on 11/09/2008 for the course CHEM 161, 161 taught by Professor Govindarajoo during the Fall '07 term at Rutgers.

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su04final - 1 What is the formal charge on P in PCl5? A. 5...

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