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Write balanced molecular and net ionic equations for the reactions of (b) chromium with hydrobromic acid

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Write balanced molecular and net ionic equations for the reactions of (a) manganese with dilute sulfuric acid

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Which element is oxidized and which is reduced in the following reactions?

(d) PbS (s) + 4 H2O2 (aq) → PbSO4 (s) + 4 H2O (l)

 

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Which element is oxidized and which is reduced in the following reactions?

(c) Cl2 (aq) + 2 NaI (aq) → I 2 (aq) + 2 NaCl (aq)

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Which element is oxidized and which is reduced in the following reactions?

(b) 3 Fe(NO3)2 (aq) + 2 Al (s) → 3 Fe (s) + 2 Al(NO 3)3 (aq)

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Which element is oxidized and which is reduced in the following reactions?

(a) N2 (g) + 3 H2 (g) → 2 NH3 (g)

 

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Determine the oxidation number for the indicated element in each of the following substances: (f) O in K2O2

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Determine the oxidation number for the indicated element in each of the following substances: (e) As in As4

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Determine the oxidation number for the indicated element in each of the following substances: (d) Br in HBrO

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Determine the oxidation number for the indicated element in each of the following substances: (b) C in COCl2

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Determine the oxidation number for the indicated element in each of the following substances: (a) S in SO2

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Define oxidation and reduction in terms of (a) electron transfer

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As K2O dissolves in water, the oxide ion reacts with water molecules to form hydroxide ions. Write the molecular and net ionic equations for this reaction. Based on the definitions of acid and base, what ion is the base in this reaction? What is the acid? What is the spectator ion in the reaction?

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Because the oxide ion is basic, metal oxides react readily with acids.

(a) FeO (s) + 2 HClO4 (aq) → Fe(ClO4) (aq) + H2O (l)

(b) Based on the equation in part (a), write the net ionic equation for the reaction that occurs between NiO(s) and an aqueous solution of nitric acid.

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Because the oxide ion is basic, metal oxides react readily with acids. (a) Write the net ionic equation for the following reaction: 
FeO (s) + 2 HClO4 (aq) → Fe(ClO4) (aq) + H2O (l)

 

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Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte: (f) C12H22O11 (sucrose).

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Classify each of the following substances as a nonelectrolyte, weak electrolyte, or strong electrolyte in water: (e) Cu(NO3)2.

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Classify each of the following substances as a nonelectrolyte, weak electrolyte, or strong electrolyte in water: (d) KClO3

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Classify each of the following substances as a nonelectrolyte, weak electrolyte, or strong electrolyte in water: (c) NH3

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Classify each of the following substances as a nonelectrolyte, weak electrolyte, or strong electrolyte in water: (b) C2H5OH (ethanol)

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Classify each of the following substances as a nonelectrolyte, weak electrolyte, or strong electrolyte in water: (a) H2SO3

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An aqueous solution of an unknown solute is tested with litmus paper and found to be acidic. The solution is weakly conducting compared with a solution of NaCl of the same concentration. Which of the following substances could the unknown be: KOH, NH3, HNO3, KClO2, H3PO3, CH3COCH3 (acetone)?

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Label each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (d) Ba(OH)2

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Label each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (c) NaClO4

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Label each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (b) acetonitrile, CH3CN

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