e5-132-f10 - Final Exam, CHE 132 Fall 2010 Multiple Choice...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Final Exam, CHE 132 Fall 2010 Multiple Choice On the Scantron form, bubble in the letter of the one choice that best completes the statement or answers the question. No credit will be given for multiple answers. ____ 1. Which one of the following is the formula for pentaaquahydroxoaluminum(III) chloride? A. [Al(H 2 O) 5 Cl](OH) 2 B. [AlCl 3 ] (H 2 O) 5 (OH) C. [Al(H 2 O) 5 (OH)]Cl 2 D. Cl[Al(H 2 O) 3 (OH) 3 ] E. [Al(H 2 O) 4 (OH) 2 ]Cl ____ 2. Determine the charge of the transition metal ion in the complex [Co(OH)(H 2 O) 4 (NH 3 )] 2+ . A. –1 B. +1 C. –2 D. +2 E. +3 ____ 3. What is the oxidation state of the transition metal ion in the complex K[Cr(ox) 2 (H 2 O) 2 ], where ox is the bidentate ligand C 2 O 4 2– ? A. Cr(IV) B. Cr(III) C. Cr(II) D. Cr(I) E. Cr(0)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
____ 4. The work required to compress a gas from an initial volume V i to a final volume V f is 326 J. During the process there is heat transfer of 528 J from the gas to the surroundings. What is the change in the internal energy of the gas during the process? A. +427 J B. –202 J C. +415 J D. –854 J E. –124 J ____ 5. Which one of the following is the correct equilibrium constant expression for the reaction shown? Mg(OH) 2 (s) + CO 3 2– (aq) MgCO 3 (s) + 2 OH (aq) A. K c = [CO 3 2– ] –2 [OH ] 2 B. K c = [MgCO 3 ] [Mg(OH) 2 ] –1 C. K c = [MgCO 3 ] [OH ] 2 [Mg(OH) 2 ] –1 [CO 3 2– ] –1 D. K c = [OH ] 2 [CO 3 2– ] 1 E. K c = [MgCO 3 ] [OH ] [Mg(OH) 2 ] –1 [CO 3 2– ] –2 ____ 6. A sheet of gold at 18.0 °C is placed flat over a sheet of iron at 55.6 °C. The mass of the iron sheet is twice the mass of the gold sheet. Assuming that no heat is lost to the surroundings, what is the final temperature of the combined metals? c (gold) = 0.129 J (g °C) –1 c (iron) = 0.444 J (g °C) –1 A. 31.3 °C B. 36.8 °C C. 73.6 °C D. 50.8 °C E. 13.6 °C
Background image of page 2
7. The equilibrium constant K p for the reaction PCl 5 (g) PCl 3 (g) + Cl 2 (g) is 1.05 at 250 °C. The reaction starts with a mixture of the three substances with partial pressures P (PCl 5 ) = 0.177 atm; P (PCl 3 ) = 0.446 atm; and P (Cl 2 ) = 0.222 atm. When the mixture reaches equilibrium at that temperature, which one of the following statements is correct? A. The partial pressure of PCl 5 has increased. B. The partial pressure of PCl 3 has increased. C. The system remained at equilibrium. D. The partial pressure of Cl 2 (g) has not changed. E. To provide an answer we need to know the initial composition of the system. ____ 8. The standard enthalpy of combustion of benzene vapor, C 6 H 6 (g), is C 6 H 6 (g) + (15/2) O 2 (g) 6 CO 2 (g) + 3 H 2 O( ) Δ H 0 c = –3302 kJ mol –1 The standard molar entropy of vaporization of benzene is C 6 H 6 ( ) C 6 H 6 (g) Δ H ° vap = 34 kJ mol –1 Calculate the standard enthalpy of combustion of liquid benzene, C 6 H 6 ( ). A. +3302 kJ mol
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/06/2012 for the course CHE 132 taught by Professor Hanson during the Fall '08 term at SUNY Stony Brook.

Page1 / 13

e5-132-f10 - Final Exam, CHE 132 Fall 2010 Multiple Choice...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online