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Exam 2-2.4 - D that is almost completely ionized and...

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EXAM II Sample Exam 2-2 Dr. V. Williamson © Vickie M. Williamson 2007, All Rights Reserved 14. What is the oxidation number of Co in CoCl 6 3- ? A. +6 B. -6 C. +8 D. -3 E. +3 15. Based on the relative reactivities table or activity series provided, which reaction below will occur? A. 2AgNO 3 (aq) + Pb(s) 2Ag(s) + Pb(NO 3 ) 2 (aq) B. 3FeBr 2 (aq) + 2Au(s) 3Fe(s) + 2AuBr 3 (aq) C. Zn(s) + MnI 2 (aq) ZnI 2 (aq) + Mn(s) D. SnCl 2 (aq) + Cu(s) Sn(s) + CuCl 2 (aq) E. Ag(s) + HNO 3 (aq) AgNO 3 (aq) + H 2 (g) 16. (4 pt) A weak acid or base is one: A. will not react with any other base or acid. B. won’t ever do much damage to tissue. C. that dissolves mainly as molecules in water since it is very slightly ionized.
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Unformatted text preview: D. that is almost completely ionized and dissolves as ions in water. E. with a very 1ow concentration. 17. Which is TRUE? A. BaSO 4 is a strong electrolyte. B. 3 mol of Na will require 2 mol of Cl 2 according to the following equation: 2Na + Cl 2 → 2 NaCl C. If 2 colorless, aqueous solutions are combined then begin to bubble and turn blue, the products are also aqueous, so no chemical reaction has taken place. D. When dissolved in water, CH 3 OH is a strong electrolyte. E. If a solid and a liquid are combined in a beaker, which then becomes very hot, there is evidence that a reaction has occurred....
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