Quiz 5 A Key - Spring 2009 Chemistry 1341 ‘ Quiz{A Name(S...

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Unformatted text preview: Spring 2009 Chemistry 1341 ‘ Quiz {A Name (S C ? MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Combining aqueous solutions of Balz and NazSO4 affords a precipitate of BaSO4. Which ion(s) 1) E ; is/are spectator ions in the reaction? A)Ba2+only B a1; + “’50:! ~47 Bagot) +1511]: B) 5042— and I- c>3a2+andso42— ‘53::- 1' W4- 54?» Sammy» - D) Na+ only @Va‘t and 1" 2) When aqueous solutions of AgNO3 and K1 are mixed, AgI precipitates. The balanced net ionic 2) 8 equation is . A) AgN03 (aq) + KI(aC1) ~> AgI(s) + KNO3(aq) ‘ air/03 +' K]: “‘7 A; + was .g+ (aq) + I~ (aq) ~—> AgI (s) %[email protected][email protected] C) AgN03 (aq) + KI(aq) —-> AgI (aq) + KN03 (s) D) Ag+ (aq) + N02; (aq) -’ AgN03 (s) E)Ag+ (MD + N03"(aq) ~ AgN03(aq) 3) A neutralization reaction between an acid and a metal hydroxide produces . 3) E A) ammonia B) hydrogen gas C) sodium hydroxide .Nater and a salt E) oxygen gas 4) A weak electrolyte exists predominantly as in solution. _ A) electrons B) ions C) atoms D) molecules B) an isotope 5)The balanced net ionic equation for precipitation of CaC03 when aqueous solutions of Na2C03 5) 12 and CaClz are mixed is A) 2Na’r (aq) + 2C1~ (aq) —> 2NaC1(aq) AL3L03 + CGd;‘->> (QCQ Wi B) Na+ (aq) + Cl“ (aq) —> NaCl(aq) 2‘ C) 2Na+ (aq) + (2032- (aco » NazCOe, (aq) @ (‘03 .1. a"; (fl/J; (a C 6} + as @Ca2+ (aq) + c032- (aq) —> CaC03 (s) E) Na2c03 (aq) + CaC12(aq) 4 2NaCl(aq) + CaCO3 (s) @ 11:62; ...
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