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1 According to the solubility rules, which of the following compounds will be soluble in water?A) PbCl2 B) AgBr C) BaSO4 D) Ca3 (PO4 )2 E) (NH4 )3 PO4 2 Which of the following compounds is a nonelectrolyte?A) CH3 COOH (acetic acid) B) NaCl C) KOH D) C2 H5 OH (ethanol) E) NH3 3 Which of the following compounds is insoluble in water?A) CuSO4 B) PbCl2 C) Pb(C2 H3 O2 )2 D) HCl E) NH3 4 When aqueous solutions of Ba(OH)2 and H2 SO4 are mixed, a reaction occurs. What ions, if any, are the spectator ions in this reaction?A) Ba2+ and OH- B) H+ and SO4 2- C) Ba2+ and SO4 2- D) H+ and OH- E) There are no spectator ions since all of them react. 5 The correct net ionic equation for the process which occurs when aqueous solutions of the electrolytes AgNO3 and Na2 S are mixed is:A) NO3 - (aq ) + Na+ (aq ) → NaNO3 (s ) B) 2Ag+ (aq ) + S2- (aq ) → Ag2 S(s ) C) Ag+ (aq ) + S- (aq ) → AgS(s ) D) Ag+ (aq ) + NO3 - (aq ) → AgNO3 (s ) E) no reaction occurs 6 Aqueous copper(II) nitrate reacts with potassium iodide to yield solid copper(I) iodide, aqueous potassium nitrate, and solid iodine. The balanced net ionic equation for the reaction is:A) 2Cu2+ (aq ) + 4I- (aq ) → 2CuI(s ) + I2 (s ) B) K+ (aq ) + 3I- (aq ) → KI(s ) + I2 (s ) C) Cu2+ (aq ) + I- (aq ) → CuI(s ) + I2 (s ) D) K+ (aq ) + NO3 - (aq ) → KNO3 (s ) E) None of the above. 7 The net ionic equation for the reaction between aqueous solutions of HCl and NH3 isA) HCl(aq ) + NH3 (aq ) → NH4 Cl(aq ) B) H+ (aq ) + NH3 (aq ) → NH4 + (aq ) C) H+ (aq ) + OH- (aq ) → H2 O(l ) D) H+ (aq ) + Cl- (aq ) + NH3 (aq ) → NH4 Cl(aq ) E) H+ (aq ) + Cl- (aq ) + NH3 (aq ) → NH4 + (aq ) + Cl- (aq ) 8 During a titration, the following data were collected. A 25 mL portion of an unknown acid solution was titrated with 1.0 M NaOH. It required 65 mL of the base to neutralize the sample. How many moles of acid are present in 3.0 liters of this unknown solution?A) 2.6 moles B) 0.9 moles C) 8.7 moles D) 7.8 moles E) 5.6 moles 9 What volume of a 0.100 M solution of HCl is required to neutralize a solution prepared by dissolving 10.0 g of KOH in 250 ml of H2 O?A) 0.178 L B) 0.25 L C) 0.71 L D) 1.78 L E) 178 L 10 What are the products when aqueous solutions of HCl and Na2 CO3 react?A) NaCl and HCO3 B) NaCl, H2 O and CO2 C) NaCl and HCO3 - D) NaH and Cl2 CO3 E) None of the above 11 In a reaction in which the SO3 2- ion is converted into S2 O4 2- , the sulfurA) is oxidized. B) is reduced. C) is the oxidizing agent. D) disproportionates. E) does not undergo a redox process. 12 The oxidation state of vanadium in Rb4 Na[HV10 O28 ] is:A) -6 B) +8 C) -5 D) +3 E) +5 13 Equation: 3Cu(s ) + 8HNO3 (aq ) → 2NO(g ) + 3Cu(NO3 )2 (aq ) + 4H2 O(l )
In the above reaction, the element oxidized is ______, the reducing agent is ______ and the number of electrons transferred from reducing to oxidizing agent in the equation, as written, is ______.A) Cu, Cu, 6 B) Cu, N, 6 C) N, Cu, 6 D) Cu, Cu, 2 E) N, N, 3 14 What is the total number of electrons transferred when the equation below is balanced?
Equation: I2 + ClO3 - + H2 O → IO3 - + Cl- + H+ (in acid)A) 5 B) 6 C) 12 D) 24 E) 30 15 Which of the following is a halogen displacement reaction?A) Fe2 O3 (s ) + 2Al(s ) → 2Fe(s ) + Al2 O3 (s ) B) 2Na(s ) + 2H2 O(l ) → 2NaOH(aq ) + H2 (g ) C) CaBr2 (aq ) + H2 SO4 (aq ) → CaSO4 (s ) + 2HBr(g ) D) 2P(s ) + 3Cl2 (g ) → 2PCl3 (g ) E) none of the above