Chemistry: Molecular Nature of Matter and Change, 6th Edition (Silberberg)

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1			Which of the following compounds is a strong electrolyte?
			A)	HNO3
			B)	HNO2
			C)	NH3
			D)	H2O
			E)	HF
2			Which of the following compounds is soluble in water?
			A)	BaSO4
			B)	Cu2O
			C)	AgBr
			D)	NaClO3
			E)	Hg2Cl2
3			In accordance with the solubility rules, which of the following is true when solutions of KCl(aq) and AgNO3(aq) are mixed?
			A)	No precipitate will form.
			B)	KAg2+ will precipitate and Cl- and NO3- will be spectator ions.
			C)	KNO3 will precipitate and Ag+ and Cl- will be spectator ions.
			D)	ClNO3 will precipitate and K+ and Ag+ will be spectator ions.
			E)	AgCl will precipitate and K+ and NO3- will be spectator ions.
4			When aqueous solutions of FeCl2 and AgNO3 are mixed, which of the following equations is balanced and correctly represents the resulting reaction?
			A)	FeCl2(aq) + AgNO3(aq) → Fe(s) + AgNO3(aq) + Cl2(g)
			B)	FeCl2(aq) + AgNO3(aq) → Fe(NO3)2(aq) + 2AgCl(s)
			C)	FeCl2(aq) + 2AgNO3(aq) → Fe(NO3)2(aq) + 2AgCl(s)
			D)	FeCl2(aq) + AgNO3(aq) → Fe(NO3)2(aq) + AgCl(s)
			E)	FeCl2(aq) + 2AgNO3(aq) → Fe(NO3)2(aq) + AgCl(s)
5			When barium nitrate and sodium phosphate are mixed together in water a precipitate is formed. The most likely chemical formula for the precipitate is:
			A)	Ba3(PO4)2
			B)	Na3PO4
			C)	Ba(NO3)2
			D)	BaPO4
			E)	NaNO3
6			Which of the following is the correct net ionic equation for the reaction that occurs when aqueous solutions of Pb(ClO3)2 and Na2SO4 are mixed?
			A)	ClO3-(aq) + Na+(aq) → NaClO3(s)
			B)	Pb2+(aq) + SO42-(aq) → PbSO4(s)
			C)	Pb(ClO3)2(aq) + Na2SO4(aq) → PbSO4(s) + NaClO3(aq)
			D)	Pb2+(aq) + 2ClO3-(aq) + 2Na+(aq) + SO42-(aq) → PbSO4(s) + 2Na+(aq) + SO42-(aq)
			E)	none of the above
7			Identify all of the products formed when Ba(OH)2(aq) reacts with HNO3(aq).
			A)	Ba(NO3)2(aq) and H2O(l)
			B)	BaN2(s) and H2O(l)
			C)	Ba2+(aq), NO2-(aq) and H2O(l)
			D)	Ba(s), H2(g) and NO2(g)
			E)	Ba(NO3)2(s) and H2O(l)
8			If 22.5 mL of 0.383 M HCl are required to completely neutralize 20.0 mL of a KOH solution, what is the molarity of the KOH solution?
			A)	0.340 M
			B)	0.383 M
			C)	0.431 M
			D)	2.32 M
			E)	2.94 M
9			During a titration the following data were collected. A 20.0 mL portion of solution of an unknown acid HX was titrated with 2.0 M KOH. It required 60.0 mL of the base to neutralize the sample. What is the molarity of the acid HX?
			A)	6.0 M
			B)	0.67 M
			C)	3.0 M
			D)	0.12 M
			E)	none of the above
10			In the reaction of 30 ml of 0.15 M HCl with 35 ml of 0.10 M NaOH, which of the following statements best describes the resulting solution?
			A)	The acid has been neutralized.
			B)	Another 5 ml of acid must be added to neutralize the solution.
			C)	Another 5 ml of base must be added to neutralize the solution.
			D)	The solution is basic.
			E)	The solution is acidic.
11			In the equation shown below, which species, if any, is the reducing agent? Equation: Cr2O72- + 2OH- → 2CrO42- + H2O
			A)	Cr2O72-
			B)	OH-
			C)	CrO42-
			D)	H2O
			E)	None of them, since it is not an oxidation reduction reaction.
12			Of the first atoms in each of the following formulas, which one has the highest oxidation number?
			A)	CO32-
			B)	NO3-
			C)	SO3
			D)	ClO3-
			E)	P2O5
13			Which, if any, of the following is not a redox reaction?
			A)	CO32- + HSO4-→ HCO3- + SO42-
			B)	2Al(s) + 3H2SO4(aq) → 3H2(g) + Al2(SO4)3(aq)
			C)	2H2O → 2H2 + O2
			D)	2NaI + Br2 → 2NaBr + I2
			E)	All of them are redox reactions.
14			What are the coefficients in front of C2H6O and C2H4O when the equation given below is balanced? The reaction occurs in aqueous acid. Equation: C2H6O + Cr2O72- + H+ → C2H4O + H2O + Cr3+
			A)	1, 1
			B)	2, 2
			C)	2, 3
			D)	3, 3
			E)	6, 6
15			What are the expected products when solid MgCO3 is heated?
			A)	Mg and CO2
			B)	Mg2C and O2
			C)	MgO and CO2
			D)	MgCO and O2
			E)	MgCO2 and O