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6. What is the standard Gibbs free energy change for the reaction between H202(aq) and Mn²+ in acidic medium at 25°C? The equation below is not balanced: (aq) H2O2(aq) + Mn² (aq) - MnO4 + H2O(1) 7. Does the reaction in 6 go substantially to completion when the reactants and products are in their standard states? Explain your rationale.

6. What is the standard Gibbs free energy change for the reaction between H202(aq) and Mn²+ in acidic medium at 25°C? The equation below is not balanced: (aq) H2O2(aq) + Mn² (aq) - MnO4 + H2O(1) 7. Does the reaction in 6 go substantially to completion when the reactants and products are in their standard states? Explain your rationale.

Pushing Electrons
Pushing Electrons
4th Edition
ISBN:9781133951889
Author:Weeks, Daniel P.
Publisher:Weeks, Daniel P.
Chapter3: Mechanisms
Section: Chapter Questions
Problem 116EQ
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Please answer 6 and 7.

### Standard Reduction Potentials Understanding standard reduction potentials is crucial for grasping the flow of electrons in redox reactions. The following table provides a list of standard reduction potentials, E° (Volts), for various couples. This information is invaluable for predicting the direction of redox reactions and for calculating the electromotive force (EMF) of electrochemical cells. #### Reduction Potential Table | **Couple** | **E° (Volts)** | **Couple** | **E° (Volts)** | |---------------------------|-----------------|---------------------------|-----------------| | F₂ ---- HF (H⁺) | +3.03 | SO₄²⁻ ---- H₂SO₃ (H⁺) | +0.20 | | F₂ ---- F⁻ | +2.87 | Sn⁴⁺ ---- Sn²⁺ | +0.15 | | S₂O₈²⁻ ---- SO₄²⁻ | +2.05 | S ---- H₂S (H⁺) | +0.141 | | BiO₃⁻ ---- Bi³⁺ | +2.0 | Hg₂Br₂ ---- Hg (Br⁻) | +0.140 | | H₂O₂ ---- H₂O (H⁺) | +1.78 | AgBr ---- Ag (Br⁻) | +0.0713 | | PbO₂ ---- PbSO₄ (H⁺, SO₄²⁻)| +1.685 | H⁺ ---- H₂ | +0.0000 | | Ce⁴⁺ ---- Ce³⁺ | +1.61 | Pb²⁺ ---- Pb | -0.126 | | MnO₄⁻ ---- Mn²⁺ (H⁺) | +1.491 | Sn²⁺ ---- Sn | -0.136 | | ClO₃⁻ ---- Cl⁻ (H⁺) | +1.47 | AgI ---- Ag (I⁻) | -0.152 | | PbO₂ ---- Pb²⁺ (H⁺) | +1.46 | Ni²⁺ ---- Ni
Transcribed Image Text:### Standard Reduction Potentials Understanding standard reduction potentials is crucial for grasping the flow of electrons in redox reactions. The following table provides a list of standard reduction potentials, E° (Volts), for various couples. This information is invaluable for predicting the direction of redox reactions and for calculating the electromotive force (EMF) of electrochemical cells. #### Reduction Potential Table | **Couple** | **E° (Volts)** | **Couple** | **E° (Volts)** | |---------------------------|-----------------|---------------------------|-----------------| | F₂ ---- HF (H⁺) | +3.03 | SO₄²⁻ ---- H₂SO₃ (H⁺) | +0.20 | | F₂ ---- F⁻ | +2.87 | Sn⁴⁺ ---- Sn²⁺ | +0.15 | | S₂O₈²⁻ ---- SO₄²⁻ | +2.05 | S ---- H₂S (H⁺) | +0.141 | | BiO₃⁻ ---- Bi³⁺ | +2.0 | Hg₂Br₂ ---- Hg (Br⁻) | +0.140 | | H₂O₂ ---- H₂O (H⁺) | +1.78 | AgBr ---- Ag (Br⁻) | +0.0713 | | PbO₂ ---- PbSO₄ (H⁺, SO₄²⁻)| +1.685 | H⁺ ---- H₂ | +0.0000 | | Ce⁴⁺ ---- Ce³⁺ | +1.61 | Pb²⁺ ---- Pb | -0.126 | | MnO₄⁻ ---- Mn²⁺ (H⁺) | +1.491 | Sn²⁺ ---- Sn | -0.136 | | ClO₃⁻ ---- Cl⁻ (H⁺) | +1.47 | AgI ---- Ag (I⁻) | -0.152 | | PbO₂ ---- Pb²⁺ (H⁺) | +1.46 | Ni²⁺ ---- Ni
### Chemistry Questions on Gibbs Free Energy and Reaction Completion #### Question 6: **What is the standard Gibbs free energy change for the reaction between H₂O₂(aq) and Mn²⁺(aq) in acidic medium at 25°C? The equation below is not balanced:** \[ \text{H}_2\text{O}_2(aq) + \text{Mn}^{2+}(aq) \rightarrow \text{MnO}_4^{-} + \text{H}_2\text{O}(l) \] #### Question 7: **Does the reaction in 6 go substantially to completion when the reactants and products are in their standard states? Explain your rationale.**
Transcribed Image Text:### Chemistry Questions on Gibbs Free Energy and Reaction Completion #### Question 6: **What is the standard Gibbs free energy change for the reaction between H₂O₂(aq) and Mn²⁺(aq) in acidic medium at 25°C? The equation below is not balanced:** \[ \text{H}_2\text{O}_2(aq) + \text{Mn}^{2+}(aq) \rightarrow \text{MnO}_4^{-} + \text{H}_2\text{O}(l) \] #### Question 7: **Does the reaction in 6 go substantially to completion when the reactants and products are in their standard states? Explain your rationale.**
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