Question 1

Solutions of hydrochloric acid,sulfuric acid,and phosphoric acid with equal concentrations and volumes are neutralized by a solution of sodium hydroxide.If it takes 25.0 mL of the sodium hydroxide solution to neutralize the hydrochloric acid,what volume of the sodium hydroxide solution does it take to neutralize each of the other two solutions? Explain.

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Question 2

Ammonia,which is highly toxic to fish because it interferes with their uptake of oxygen,is formed from wastes excreted by the fish,uneaten food,and decaying plants.Beneficial bacteria oxidize the ammonia to nitrate,which is not highly toxic to fish in low to moderate levels.Complete and balance the reaction in basic solution. NH₃(aq)+ O₂(aq)$\to$NO₃^-(aq)

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Question 3

Ammonia,which is highly toxic to fish because it interferes with their uptake of oxygen,is formed from wastes excreted by the fish,uneaten food,and decaying plants.Beneficial bacteria oxidize the ammonia and ammonium to nitrate,which is not highly toxic to fish in low to moderate levels.Complete and balance the reaction equation in acidic solution.Hint: One half-reaction should be written using NH₄⁺ and NO₃^-; the other should be written using O₂ and H₂O. NH₄⁺(aq)+ O₂(aq)$\to$ NO₃^-(aq)

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Question 4

Balance the following redox reaction under basic aqueous conditions. MnO₄^-(aq)+ SO₃^2-(aq)$\to$ MnO₂(s)+ SO₄^2-(aq)

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Question 5

Milk of magnesia is a liquid antacid.The active ingredient is magnesium hydroxide.What volume of 0.15 M stomach acid (HCl)could be neutralized by a dose of 10.0 mL containing 820 mg of the active ingredient?

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Question 6

A barium hydroxide solution is titrated using nitric acid.A 260 mL portion of the Ba(OH)₂ solution requires 150 mL of 1.6 M HNO₃ to reach the equivalence point.In a second titration,it is found that 150 mL of the Ba(OH)₂ solution neutralized 450 mL of a sulfuric acid solution.What is the molarity of the H₂SO₄?

Accepted Answer

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Question 7

Balance the following redox reaction under acidic aqueous conditions. CuS(s)+ NO₃^-(aq)$\to$ Cu²⁺(aq)+ SO₄^2-(aq)+ NO(g)

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Question 8

Some microorganisms living under anaerobic conditions extract oxygen from sulfate ions,producing hydrogen sulfide gas,which produces a distinctive rotten-egg odor.Write the balanced net ionic equation for this reaction under acidic conditions.

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Question 9

A food chemist determined the concentration of acetic acid in a sample of apple cider vinegar.The volume of 1.215 M NaOH required to titrate a 25.00 mL sample of the vinegar was 19.85 mL.The density of the sample was 1.01 g/mL.What is (a)the molar concentration,and (b)the percent by mass of acetic acid in this vinegar? (CH₃COOH,60.05 g/mol)

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Question 10

A phosphoric acid solution is titrated using potassium hydroxide.If the complete neutralization of 250 mL of the H₃PO₄ solution requires 47 mL of 2.2 M KOH,what is the molarity of the H₃PO₄?

Accepted Answer

The answer of A phosphoric acid solution is titrated using...

Quiz 8: Aqueous Solutions-Chemistry of the Hydrosphere

Balance the following redox reaction under basic aqueous conditions. MnO₄^-(aq)+ SO₃^2-(aq) $\to$ MnO₂(s)+ SO₄^2-(aq)

Milk of magnesia is a liquid antacid.The active ingredient is magnesium hydroxide.What volume of 0.15 M stomach acid (HCl)could be neutralized by a dose of 10.0 mL containing 820 mg of the active ingredient?

Balance the following redox reaction under acidic aqueous conditions. CuS(s)+ NO₃^-(aq) $\to$ Cu²⁺(aq)+ SO₄^2-(aq)+ NO(g)

Some microorganisms living under anaerobic conditions extract oxygen from sulfate ions,producing hydrogen sulfide gas,which produces a distinctive rotten-egg odor.Write the balanced net ionic equation for this reaction under acidic conditions.

A phosphoric acid solution is titrated using potassium hydroxide.If the complete neutralization of 250 mL of the H₃PO₄ solution requires 47 mL of 2.2 M KOH,what is the molarity of the H₃PO₄?

Quiz 8: Aqueous Solutions-Chemistry of the Hydrosphere

Balance the following redox reaction under basic aqueous conditions. MnO4-(aq)+ SO32-(aq) →\to→ MnO2(s)+ SO42-(aq)

Milk of magnesia is a liquid antacid.The active ingredient is magnesium hydroxide.What volume of 0.15 M stomach acid (HCl)could be neutralized by a dose of 10.0 mL containing 820 mg of the active ingredient?

Balance the following redox reaction under acidic aqueous conditions. CuS(s)+ NO3-(aq) →\to→ Cu2+(aq)+ SO42-(aq)+ NO(g)

Some microorganisms living under anaerobic conditions extract oxygen from sulfate ions,producing hydrogen sulfide gas,which produces a distinctive rotten-egg odor.Write the balanced net ionic equation for this reaction under acidic conditions.

A phosphoric acid solution is titrated using potassium hydroxide.If the complete neutralization of 250 mL of the H3PO4 solution requires 47 mL of 2.2 M KOH,what is the molarity of the H3PO4?

Balance the following redox reaction under basic aqueous conditions. MnO₄^-(aq)+ SO₃^2-(aq) $\to$ MnO₂(s)+ SO₄^2-(aq)

Balance the following redox reaction under acidic aqueous conditions. CuS(s)+ NO₃^-(aq) $\to$ Cu²⁺(aq)+ SO₄^2-(aq)+ NO(g)

A phosphoric acid solution is titrated using potassium hydroxide.If the complete neutralization of 250 mL of the H₃PO₄ solution requires 47 mL of 2.2 M KOH,what is the molarity of the H₃PO₄?