Given: 2H+(aq)+ 2e- $\to$ H2(g); 0.00 V Rb+(aq)+ e- $\to$ Rb(s); -2.98 V F2(g)+ 2e- $\to$ 2F-(aq); 2.87 V Al3+(aq)+ 3e- $\to$ Al(s); -1.66 V Pb2+(aq)+ 2e- $\to$ Pb(s); -0.13 V Under standard-state conditions,which is the strongest reducing agent?

A) Al3+ B) H+ C) Pb2+ D) F- E) Rb A) Al3+ B) H+ C) Pb2+ D) F- E) Rb

Calculate the standard reduction potential for the following reaction at 25 S1U1P1$\circ$S1S1P0C, AuCl4-(aq)+ 3 e- $\to$ Au(s)+ 4 Cl-(aq) Given the following thermodynamic information. Au3+(aq)+ 3 e- $\to$ Au(s)$~~~~~~~~$$~~~~~~~~$$~~~~ ~~ $ES1U1P1$\circ$S1S1P0 = +1.50 V Au3+(aq)+ 4 Cl-(aq)$\to$ AuCl4-(aq)$~~~~~~~~$Kf = 2.3 $\times$ 1025

A) -1.28 V B) -0.50 V C) +1.00 V D) +1.28 V E) +3.85 V A) -1.28 V B) -0.50 V C) +1.00 V D) +1.28 V E) +3.85 V

What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 160 min using a constant current of 15.0 A? Assume 100% current efficiency.(F = 96485 C/mol)

A) 0.431 g B) 25.9 g C) 232.8 g D) 0.187 g E) 38.8 g A) 0.431 g B) 25.9 g C) 232.8 g D) 0.187 g E) 38.8 g

Exam 20: Principles of Reactivity: Electron Transfer Reactions

Gold and platinum are commonly used as inert electrodes in laboratory experiments.In commercial applications,such as batteries,________ is more commonly used for inert electrodes because it is far less expensive.

(Short Answer)

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Question 81

Given: 2H⁺(aq)+ 2e^- $\to$ H₂(g); 0.00 V Rb⁺(aq)+ e^- $\to$ Rb(s); -2.98 V F₂(g)+ 2e^- $\to$ 2F^-(aq); 2.87 V Al³⁺(aq)+ 3e^- $\to$ Al(s); -1.66 V Pb²⁺(aq)+ 2e^- $\to$ Pb(s); -0.13 V Under standard-state conditions,which is the strongest reducing agent?

(Multiple Choice)

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Question 82

Calculate the standard reduction potential for the following reaction at 25 ^$\circ$C, AuCl₄^-(aq)+ 3 e^- $\to$ Au(s)+ 4 Cl^-(aq) Given the following thermodynamic information. Au³⁺(aq)+ 3 e^- $\to$ Au(s) $$ $$ $ $ E^$\circ$ = +1.50 V Au³⁺(aq)+ 4 Cl^-(aq) $\to$ AuCl₄^-(aq) $~~$ K_f = 2.3 $\times$ 10²⁵

(Multiple Choice)

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Question 83

When a secondary battery provides electrical energy,it is acting as a voltaic cell.When the battery is recharging,it is operating as a(n)________ cell.

(Short Answer)

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Question 84

What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr₂(SO₄)₃ for 160 min using a constant current of 15.0 A? Assume 100% current efficiency.(F = 96485 C/mol)

(Multiple Choice)

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Question 85

A Faraday,F,is defined as

(Multiple Choice)

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Question 86

Showing 81 - 86 of 86

Gold and platinum are commonly used as inert electrodes in laboratory experiments.In commercial applications,such as batteries,________ is more commonly used for inert electrodes because it is far less expensive.

Given: 2H⁺(aq)+ 2e^- $\to$ H₂(g); 0.00 V Rb⁺(aq)+ e^- $\to$ Rb(s); -2.98 V F₂(g)+ 2e^- $\to$ 2F^-(aq); 2.87 V Al³⁺(aq)+ 3e^- $\to$ Al(s); -1.66 V Pb²⁺(aq)+ 2e^- $\to$ Pb(s); -0.13 V Under standard-state conditions,which is the strongest reducing agent?

When a secondary battery provides electrical energy,it is acting as a voltaic cell.When the battery is recharging,it is operating as a(n)________ cell.

What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr₂(SO₄)₃ for 160 min using a constant current of 15.0 A? Assume 100% current efficiency.(F = 96485 C/mol)

A Faraday,F,is defined as

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Exam 20: Principles of Reactivity: Electron Transfer Reactions

Gold and platinum are commonly used as inert electrodes in laboratory experiments.In commercial applications,such as batteries,________ is more commonly used for inert electrodes because it is far less expensive.

Given: 2H+(aq)+ 2e- →\to→ H2(g); 0.00 V Rb+(aq)+ e- →\to→ Rb(s); -2.98 V F2(g)+ 2e- →\to→ 2F-(aq); 2.87 V Al3+(aq)+ 3e- →\to→ Al(s); -1.66 V Pb2+(aq)+ 2e- →\to→ Pb(s); -0.13 V Under standard-state conditions,which is the strongest reducing agent?

When a secondary battery provides electrical energy,it is acting as a voltaic cell.When the battery is recharging,it is operating as a(n)________ cell.

What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 160 min using a constant current of 15.0 A? Assume 100% current efficiency.(F = 96485 C/mol)

A Faraday,F,is defined as

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Carbon: Not Just Another Element

Biochemistry

Nuclear Chemistry

Filters

Given: 2H⁺(aq)+ 2e^- $\to$ H₂(g); 0.00 V Rb⁺(aq)+ e^- $\to$ Rb(s); -2.98 V F₂(g)+ 2e^- $\to$ 2F^-(aq); 2.87 V Al³⁺(aq)+ 3e^- $\to$ Al(s); -1.66 V Pb²⁺(aq)+ 2e^- $\to$ Pb(s); -0.13 V Under standard-state conditions,which is the strongest reducing agent?

What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr₂(SO₄)₃ for 160 min using a constant current of 15.0 A? Assume 100% current efficiency.(F = 96485 C/mol)