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Exam 4: Reactions in Aqueous Solutions

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Question 31

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An aqueous solution of HI is named

A) hydriodic acid.
B) hydroiodous acid.
C) iodic acid.
D) iodous acid.

E) A) and D)
F) A) and C)

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Question 32

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In the reaction 2 H₂O₂(l) → 2 H₂O(l) + O₂(g) oxygen is

A) both oxidized and reduced.
B) neither oxidized nor reduced.
C) only oxidized.
D) only reduced.

E) A) and C)
F) C) and D)

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Question 33

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The substance is undergoing oxidation in the reaction below is ________. 2 S₂O₃^2-(aq)+ I₃^-(aq)→ S₄O₆^2-(aq)+ 3 I^-(aq)

What is the oxidation number of the sulfur atom in S₈?

When K₂SO₄(aq) and Pb(NO₃) ₂(aq) are mixed,a white colored precipitate forms which is

Which elements will not react with liquid water but will react with aqueous H⁺ ions?

The hydrogen ion,H⁺,is also referred to as a ________,and a hydrated hydrogen ion,H₃O⁺,is called a ________ ion.

What reagent could be used to separate Br^- from NO₃^- when added to an aqueous solution containing both?

Assume that an aqueous solution of a cation,represented by shaded spheres,is allowed to mix with a solution of an anion,represented by unshaded spheres.Three possible outcomes are represented by boxes (a) -(c) . -Which outcome corresponds to the combination of copper(II) and sulfide ions shown in the following equation? Cu²⁺(aq) + S^2-(aq) → ?

Phthalic acid is a diprotic acid having the formula HO₂CC₆H₄CO₂H that can be converted to a salt by reaction with base.Which of the following is expected to be most soluble in water?

Assume that an aqueous solution of hydroxide ion,OH^-,represented by unshaded spheres,is allowed to mix with a solution of an acid,H_nA,represented by gray spheres.Three possible outcomes are represented by boxes (a) -(c) ,where the black spheres represent A^n-,the anion of the acid.For clarity H₂O molecules are not shown. -Which outcome corresponds to the reaction: HCN + OH^- → H₂O + CN^-?

Determine the number of water molecules necessary to balance the reduction half reaction of ____ MnO₄^-(aq) → ____ MnO₂(s) that occurs in a basic solution.

Because it forms some H⁺ and OCl^- ions when dissolved in water,the molecule HOCl is classified as a(n)________.

What reagent could not be used to separate Br^- from CO₃^2- when added to an aqueous solution containing both?

Which pair of compounds is soluble in water?

According to the balanced chemical equation 5 H₂C₂O₄(aq) + 2 MnO₄^-(aq) + 6 H⁺(aq) → 10 CO₂(g) + 2 Mn²⁺(aq) + 8 H₂O(l) 0) 3500 grams of oxalic acid,H₂C₂O₄ will react with ________ mL of 0.100 M potassium permanganate,KMnO₄ solution.

Metals that do not react with hydrochloric acid to produce hydrogen gas are found ________ H₂ in the activity series.

The mixing of which pair of reactants will result in a precipitation reaction?

What is the molar concentration of sodium ions in a 0.350 M Na₃PO₄ solution?

In which compound is the oxidation state of hydrogen not +1?