How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 0.345 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq)+ 2 FeCl3(aq)→ Fe2S3(s)+ 6 NaCl(aq)

A) 6.38 mL B) 10.8 mL C) 12.8 mL D) 25.5 mL A) 6.38 mL B) 10.8 mL C) 12.8 mL D) 25.5 mL

Acetic acid (CH3CO2H),formic acid (HCO2H),hydrofluoric acid (HF),ammonia (NH3),and methylamine (CH3NH2)are commonly classified as

A) acids. B) nonelectrolytes. C) strong electrolytes. D) weak electrolytes. A) acids. B) nonelectrolytes. C) strong electrolytes. D) weak electrolytes.

Assume that the conductivity of a solution depends only on the total concentration of dissolved ions and that you measure the conductivity of three different solutions while performing titrations in which I.50.00 mL of 0.100 M aqueous CHS1U1B13S1U1B0COS1U1B12S1U1B0H is titrated by addition of 0.100 M NaOH. II.50.00 mL of 0.100 M aqueous NaBr is titrated by addition of 0.100 M AgNOS1U1B13S1U1B0. III.50.00 mL of 0.100 M aqueous CaClS1U1B12S1U1B0 is titrated by addition of 0.100 M NaS1U1B12S1U1B0COS1U1B13S1U1B0. -Which of the above graphs corresponds to titration III?

A) graph (1) B) graph (2) C) graph (3) D) None of the graphs A) graph (1) B) graph (2) C) graph (3) D) None of the graphs

What is the oxidation number of the chromium atom in K2Cr2O4?

A) -2 B) +3 C) +6 D) +7 A) -2 B) +3 C) +6 D) +7

When Na2CrO4(aq)and AgNO3(aq)are mixed,a red colored precipitate forms which is

A) Ag. B) Ag2CrO4. C) AgNO2. D) NaNO3. A) Ag. B) Ag2CrO4. C) AgNO2. D) NaNO3.

The reaction Sr(NO3)2(aq)+ Cs2SO4(aq)→ SrSO4(s)+ 2 CsNO3(aq)is best classified as a(n)

A) acid-base neutralization reaction. B) oxidation-reduction reaction. C) precipitation reaction. D) single replacement reaction. A) acid-base neutralization reaction. B) oxidation-reduction reaction. C) precipitation reaction. D) single replacement reaction.

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

A) AgNO3 (aq) B) Ca(NO3)2 (aq) C) Cu(NO3)2 (aq) D) Fe(NO3)2(aq) A) AgNO3 (aq) B) Ca(NO3)2 (aq) C) Cu(NO3)2 (aq) D) Fe(NO3)2(aq)

Exam 4: Reactions in Aqueous Solutions

How many milliliters of 0.200 M FeCl₃ are needed to react with an excess of Na₂S to produce 0.345 g of Fe₂S₃ if the percent yield for the reaction is 65.0%? 3 Na₂S(aq)+ 2 FeCl₃(aq)→ Fe₂S₃(s)+ 6 NaCl(aq)

(Multiple Choice)

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Question 121

Acetic acid (CH₃CO₂H),formic acid (HCO₂H),hydrofluoric acid (HF),ammonia (NH₃),and methylamine (CH₃NH₂)are commonly classified as

(Multiple Choice)

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Question 122

Coinage metals are metals that are not easily oxidized.Based on the activity series,which metal would be least desirable as a coinage metal?

(Multiple Choice)

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Question 123

In the following reaction,the reducing agent is ________. 2 MnO₄^-(aq)+ 10 Br^-(aq)+ 16 H⁺(aq)→ 2 Mn²⁺^(aq)+5 Br₂(aq)+ 8 H₂O(aq)

(Short Answer)

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Question 124

Which outcome corresponds to the combination of silver and chromate ions shown in the following equation? Ag⁺(aq)+ CrO₄^2-(aq)→ ?

(Multiple Choice)

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Question 125

What is the oxidation number of the chromium atom in Li₂Cr₂O₄?

(Multiple Choice)

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Question 126

Which species functions as the reducing agent in the following reduction-oxidation reaction? ZnO(s)+ C(s)→ Zn(s)+ CO(g)

(Multiple Choice)

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Question 127

Assume that the conductivity of a solution depends only on the total concentration of dissolved ions and that you measure the conductivity of three different solutions while performing titrations in which I.50.00 mL of 0.100 M aqueous CH₃CO₂H is titrated by addition of 0.100 M NaOH. II.50.00 mL of 0.100 M aqueous NaBr is titrated by addition of 0.100 M AgNO₃. III.50.00 mL of 0.100 M aqueous CaCl₂ is titrated by addition of 0.100 M Na₂CO₃. -Which of the above graphs corresponds to titration III?

(Multiple Choice)

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Question 128

Assume that the unshaded spheres in the buret represent H⁺ ions,the shaded spheres in the flask represent OH^- ions,and you are carrying out a titration of the base with the acid. -If the volumes in the buret and the flask are identical and the concentration of the acid in the buret is 0.500 M,what is the concentration of the base in the flask?

(Multiple Choice)

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Question 129

What is the oxidation number of the chromium atom in K₂Cr₂O₄?

(Multiple Choice)

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Question 130

Which outcome corresponds to the combination of copper(II)and sulfide ions shown in the following equation? Cu²⁺(aq)+ S^2-(aq)→ ?

(Multiple Choice)

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Question 131

Which pair of compounds is soluble in water?

(Multiple Choice)

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Question 132

If the reaction of phosphate ion with water is ignored,what is the total concentration of ions in a solution prepared by dissolving 7.00 g of K₃PO₄ in enough water to make 350.mL of solution?

(Multiple Choice)

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Question 133

A hydrocarbon of unknown formula C_xH_ywas submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

(Multiple Choice)

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Question 134

What is the oxidation number of the oxygen atom in O₂^2-?

(Multiple Choice)

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Question 135

Which of the following compounds is an Arrhenius base in water?

(Multiple Choice)

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Question 136

When Na₂CrO₄(aq)and AgNO₃(aq)are mixed,a red colored precipitate forms which is

(Multiple Choice)

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Question 137

The reaction Sr(NO₃)₂(aq)+ Cs₂SO₄(aq)→ SrSO₄(s)+ 2 CsNO₃(aq)is best classified as a(n)

(Multiple Choice)

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Question 138

What volume of a 0.540 M KOH solution contains 15.5 g of KOH?

(Multiple Choice)

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Question 139

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

(Multiple Choice)

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Question 140

Showing 121 - 140 of 211

Exam 4: Reactions in Aqueous Solutions

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 0.345 g of Fe2S3 if the percent yield for the reaction is 65.0%? 3 Na2S(aq)+ 2 FeCl3(aq)→ Fe2S3(s)+ 6 NaCl(aq)

Acetic acid (CH3CO2H),formic acid (HCO2H),hydrofluoric acid (HF),ammonia (NH3),and methylamine (CH3NH2)are commonly classified as

Coinage metals are metals that are not easily oxidized.Based on the activity series,which metal would be least desirable as a coinage metal?

In the following reaction,the reducing agent is ________. 2 MnO4-(aq)+ 10 Br-(aq)+ 16 H+(aq)→ 2 Mn2+(aq)+5 Br2(aq)+ 8 H2O(aq)

Which outcome corresponds to the combination of silver and chromate ions shown in the following equation? Ag+(aq)+ CrO42-(aq)→ ?

What is the oxidation number of the chromium atom in Li2Cr2O4?

Which species functions as the reducing agent in the following reduction-oxidation reaction? ZnO(s)+ C(s)→ Zn(s)+ CO(g)

What is the oxidation number of the chromium atom in K2Cr2O4?

Which outcome corresponds to the combination of copper(II)and sulfide ions shown in the following equation? Cu2+(aq)+ S2-(aq)→ ?

Which pair of compounds is soluble in water?

If the reaction of phosphate ion with water is ignored,what is the total concentration of ions in a solution prepared by dissolving 7.00 g of K3PO4 in enough water to make 350.mL of solution?

A hydrocarbon of unknown formula CxHy was submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

What is the oxidation number of the oxygen atom in O22-?

Which of the following compounds is an Arrhenius base in water?

When Na2CrO4(aq)and AgNO3(aq)are mixed,a red colored precipitate forms which is

The reaction Sr(NO3)2(aq)+ Cs2SO4(aq)→ SrSO4(s)+ 2 CsNO3(aq)is best classified as a(n)

What volume of a 0.540 M KOH solution contains 15.5 g of KOH?

What reagent could not be used to separate Br- from CO32- when added to an aqueous solution containing both?

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How many milliliters of 0.200 M FeCl₃ are needed to react with an excess of Na₂S to produce 0.345 g of Fe₂S₃ if the percent yield for the reaction is 65.0%? 3 Na₂S(aq)+ 2 FeCl₃(aq)→ Fe₂S₃(s)+ 6 NaCl(aq)

Acetic acid (CH₃CO₂H),formic acid (HCO₂H),hydrofluoric acid (HF),ammonia (NH₃),and methylamine (CH₃NH₂)are commonly classified as

In the following reaction,the reducing agent is ________. 2 MnO₄^-(aq)+ 10 Br^-(aq)+ 16 H⁺(aq)→ 2 Mn²⁺^(aq)+5 Br₂(aq)+ 8 H₂O(aq)

Which outcome corresponds to the combination of silver and chromate ions shown in the following equation? Ag⁺(aq)+ CrO₄^2-(aq)→ ?

What is the oxidation number of the chromium atom in Li₂Cr₂O₄?

What is the oxidation number of the chromium atom in K₂Cr₂O₄?

Which outcome corresponds to the combination of copper(II)and sulfide ions shown in the following equation? Cu²⁺(aq)+ S^2-(aq)→ ?

If the reaction of phosphate ion with water is ignored,what is the total concentration of ions in a solution prepared by dissolving 7.00 g of K₃PO₄ in enough water to make 350.mL of solution?

A hydrocarbon of unknown formula C_xH_ywas submitted to combustion analysis with the following results.What is the empirical formula of the hydrocarbon?

What is the oxidation number of the oxygen atom in O₂^2-?

When Na₂CrO₄(aq)and AgNO₃(aq)are mixed,a red colored precipitate forms which is

The reaction Sr(NO₃)₂(aq)+ Cs₂SO₄(aq)→ SrSO₄(s)+ 2 CsNO₃(aq)is best classified as a(n)

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