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A concentration cell Pt|H2(g)|HCl(aq)||H...

A concentration cell `Pt|H_2(g)|HCl(aq)||H_2SO_(4)(aq)|H_2(g)|Pt` is constructed using equal concentration of acids and equal number of moles of `H_2` gas in both the compartments at the same temperature.If volume of `H_2` gas at the anodic compartment is `1/9` times the volume of `H_2` gas at cathodic compartment Which of the following is/are correct for the given cell `(log 2=0.3, log 3=0.48)(2.303 RT)/F=0.06 V`

A

Pressure of `H_2` gas in both the cell compartment are equal

B

Concentration of `H^(+)` ion in both the cell compartment are unequal

C

`E_(cell)^(@)=0` for the above cell

D

`E_(cell)ne0` for the above cell

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The correct Answer is:
To solve the given problem regarding the concentration cell `Pt|H_2(g)|HCl(aq)||H_2SO_(4)(aq)|H_2(g)|Pt`, we need to analyze the information provided and apply the Nernst equation. ### Step-by-step Solution: 1. **Identify the Components of the Cell**: - The cell consists of two compartments: - Anodic compartment: `H_2(g)` in `HCl(aq)` - Cathodic compartment: `H_2(g)` in `H_2SO_4(aq)` 2. **Understand the Given Conditions**: - Equal concentration of acids in both compartments. - Equal number of moles of `H_2` gas in both compartments. - The volume of `H_2` gas at the anodic compartment is `1/9` times the volume of `H_2` gas at the cathodic compartment. 3. **Relate Volume and Pressure**: - Since the number of moles is equal and the volume of gas at the anode is `1/9` of that at the cathode, we can use the ideal gas law to relate pressure and volume: \[ P \propto \frac{1}{V} \] - Therefore, if \( V_{anode} = \frac{1}{9} V_{cathode} \), then: \[ P_{anode} = 9 P_{cathode} \] 4. **Determine Concentrations of H⁺ Ions**: - For `HCl`, the concentration of `H⁺` ions is equal to the concentration of `HCl`, denoted as \( C \). - For `H2SO4`, which is dibasic, the concentration of `H⁺` ions will be \( 2C \) (since it produces two `H⁺` ions per molecule). 5. **Set Up the Nernst Equation**: - The Nernst equation for the cell can be written as: \[ E_{cell} = E^0_{cell} - \frac{0.06}{n} \log \left( \frac{[H^+]_{anode} \cdot P_{H2, cathode}^{1/2}}{[H^+]_{cathode} \cdot P_{H2, anode}^{1/2}} \right) \] - Here, \( E^0_{cell} = 0 \) (standard potential for hydrogen), and \( n = 1 \) (one electron is involved). 6. **Substituting Values into the Nernst Equation**: - Substitute the concentrations and pressures: \[ E_{cell} = 0 - 0.06 \log \left( \frac{C \cdot (P_{cathode})^{1/2}}{(2C) \cdot (P_{anode})^{1/2}} \right) \] - Since \( P_{anode} = 9 P_{cathode} \): \[ E_{cell} = -0.06 \log \left( \frac{C \cdot (P_{cathode})^{1/2}}{(2C) \cdot (9 P_{cathode})^{1/2}} \right) \] - Simplifying gives: \[ E_{cell} = -0.06 \log \left( \frac{1}{18} \right) = -0.06 \log \left( \frac{1}{2} \cdot \frac{1}{9} \right) = -0.06 \left( \log \frac{1}{2} + \log \frac{1}{9} \right) \] - Using \( \log 2 = 0.3 \) and \( \log 3 = 0.48 \): \[ E_{cell} = -0.06 \left( -0.3 - 0.96 \right) = -0.06 \times (-1.26) = 0.0756 \text{ V} \approx 0.076 \text{ V} \] 7. **Conclusion**: - Based on the analysis: - The pressure of hydrogen gas in both compartments is **not equal**. - The concentration of `H⁺` ions in both compartments is **unequal**. - \( E^0_{cell} = 0 \). - \( E_{cell} \) is **not equal to 0**. ### Final Answer: - Correct statements are: 1. Concentration of H⁺ ions in both compartments are unequal. 2. \( E^0_{cell} = 0 \). 3. \( E_{cell} \) is not equal to 0.

To solve the given problem regarding the concentration cell `Pt|H_2(g)|HCl(aq)||H_2SO_(4)(aq)|H_2(g)|Pt`, we need to analyze the information provided and apply the Nernst equation. ### Step-by-step Solution: 1. **Identify the Components of the Cell**: - The cell consists of two compartments: - Anodic compartment: `H_2(g)` in `HCl(aq)` - Cathodic compartment: `H_2(g)` in `H_2SO_4(aq)` ...
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