practicefinal

practicefinal - 1. Hydrogen can be made from fossil fuels...

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1. Hydrogen can be made from fossil fuels in a series of two catalyzed reactions. One of these reactions, the shift reaction , is __ A. Cu(s) + 2H + (aq) ' Cu 2+ (aq) + H 2 (g) __ B. CO(g) + H 2 O(g) ' CO 2 (g) + H 2 (g) __ C. 2H 2 O(l) ' 2H 2 (g) + O 2 (g) __ D. CH 3 OH(l) ' 2H 2 (g) + CO(g) __ E. Zn(s) + 2HCl(aq) ' ZnCl 2 (aq) + H 2 (g) 2. Which of the following can be extracted by hydrometallurgical reduction of their ions with hydrogen? Consult a table of standard potentials. __ A. Ag __ B. Fe __ C. Pb __ D. Ni __ E. Co 3. The equation for the hydrometallurgical extraction of silver is __ A. 2Ag(s) + 2H + (aq) ' Ag + (aq) + H 2 (g) __ B. Ag + (aq) + Cl (aq) ' AgCl(s) __ C. Ag + (aq) + 2CN (aq) ' Ag(CN) 2 (aq) __ D. Ag + (aq) + H 2 (g) ' 2Ag(s) + 2H + (aq) __ E. Ag + (aq) + 2S 2 O 3 2— (aq) ' Ag(S 2 O 3 ) 2 3— (aq) 4. Hydrogen is used in all of the following industrial processes except __ A. the reduction of metals from their oxides. __ B. the Haber process. __ C. petroleum refining. __ D. hydrogenation of vegetable oils. __ E. the production of HCl. 5. Which of the following is a basic oxide? __ A. MgO(s) __ B. SiO 2 (s) __ C. SO 2 (g) __ D. CO 2 (g) __ E. CO(g) 1
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6. The products of the reaction of sodium hydride with water are __ A. NaOH(aq) and H 2 (g). __ B. NaOH(aq) and O 2 (g). __ C. Na 2 O(s) and H 2 (g). __ D. Na 2 O 2 (s) and O 2 (g). __ E. NaO 2 (s) and O 2 (g). 7. Which of the following has the lowest melting point? __ A. Cs __ B. Rb __ C. K __ D. Na __ E. Li 8. The alkali metals all react with water. Which is the least reactive metal? __ A. Li __ B. Na __ C. K __ D. Rb __ E. Cs 9. Which of the following metals react with nitrogen at room temperature? __ A. Li __ B. K __ C. Na __ D. Rb __ E. Cs 10. Lithium and sodium react with oxygen to produce __ A. Li 2 O(s) and Na 2 O(s) __ B. LiO 2 (s) and Na 2 O(s) __ C. Li 2 O(s) and Na 2 O 2 (s) __ D. Li 2 O 2 (s) and NaO 2 (s) __ E. LiO 2 (s) and Na 2 O 2 (s) 11. The main product of the reaction of potassium with oxygen is __ A. K 2 O(s) __ B. K 2 O 2 (s) __ C. KO 2 (s) __ D. KOH(s) __ E. K 2 O 3 (s) 2
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12. Sodium sulfate, "salt cake," is produced by the reaction of __ A. NaHSO 4 (s) and H 2 O(l). __ B. SO 2 (g) and H 2 O(l). __ C. MnSO 4 (s) and NaCl(s). __ D. H 2 SO 4 (l) and NaCl(s). __ E. HCl(g) and NaHSO 4 (s). 13. Calcium reacts with hydrogen to form A. When A is dissolved in water, B and C are formed. What are the compounds A, B, and C, respectively? __ A. CaH 2 (s), CaO(s), and H 2 (g) __ B. CaH 2 (s), CaO 2 (s), and O 2 (g) __ C. CaH 2 (s), CaO(s), and O 2 (g) __ D. CaH 2 (s), CaO 2 (s), and H 2 (g) __ E. CaH 2 (s), Ca(OH) 2 (s), and H 2 (g) 14. Which of the substances below can be used to extinguish a magnesium fire?
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This note was uploaded on 11/16/2008 for the course CHEM 6C taught by Professor Hoeger during the Spring '08 term at UCSD.

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practicefinal - 1. Hydrogen can be made from fossil fuels...

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