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PV work for a gas-phase reaction from the change in moles or volumes of gas

This type of question, asked 10 times: 15 May 2023 S1, 11 May 2024 S1, 11 May 2024 S2, 14 May 2024 S2, 19 Apr 2025 S1, 21 Apr 2025 S1, 22 Apr 2025 S2, 11 Apr 2026 S2, 19 Apr 2026 S2, 15 May 2026 S1. All 10 questions below, oldest first.

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  1. Question 1

    15 May 2023 S1

    100
    100 ml of H2_2(g) and 100 ml of Cl2_2(g) were allowed to react at 1 bar pressure as H2_2(g) + Cl2_2(g) ⟶\longrightarrow 2HCl(g). What will be the PV type of work done during reaction?

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  2. Question 2

    11 May 2024 S1

    100
    What is value of PV type of work for following reaction at 1-bar? C2H4(g) (200 mL)+HCl(g) (150 mL)→C2H5Cl(g)C_2H_4(g)\,(200\text{ mL}) + HCl(g)\,(150\text{ mL}) \rightarrow C_2H_5Cl(g)

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  3. Question 3

    11 May 2024 S2

    52
    What is the work done during oxidation of 4 moles of SO2(g)\text{SO}_2(g) to SO3(g)\text{SO}_3(g) at 27∘C27^{\circ}\text{C} (R=8.314 J K−1mol−1R = 8.314\text{ J K}^{-1}\text{mol}^{-1})

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  4. Question 4

    14 May 2024 S2

    95
    Calculate the PV type of work for the following reaction at 1 bar: C3H6(g)(150 mL)+HCl(g)(150 mL)→C3H7Cl(g)(150 mL)C_3H_6(g)(150\,\text{mL}) + HCl(g)(150\,\text{mL}) \rightarrow C_3H_7Cl(g)(150\,\text{mL})

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  5. Question 5

    19 Apr 2025 S1

    86
    Which from following reactions performs zero work?

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  6. Question 6

    21 Apr 2025 S1

    60
    Calculate the work done in following reaction at 27∘C27^{\circ}C. 4SO2(g)+2O2(g)⟶4SO3(g)4SO_{2(g)}+ 2O_{2(g)}\longrightarrow 4SO_{3(g)}, (R=8.314 J K−1 mol−1R = 8.314\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1})

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  7. Question 7

    22 Apr 2025 S2

    56
    Identify from following reactions that exhibits negative work done.

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  8. Question 8

    11 Apr 2026 S2

    16
    200200 mL of ethylene gas and 150150 mL of HCl gas were allowed to react at 11 bar. Pressure to form gaseous ethyl chloride. What is the work done during the reaction?

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  9. Question 9

    19 Apr 2026 S2

    8
    Calculate the work done for the following reaction at 27 ∘C27\ ^\circ\mathrm{C} C2H4(g)+H2(g)⟶C2H6(g)\mathrm{C_2H_{4(g)} + H_{2(g)} \longrightarrow C_2H_{6(g)}} (R=8.314 JK−1mol−1)(R = 8.314\ \mathrm{JK^{-1}mol^{-1}})

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  10. Question 10

    15 May 2026 S1

    6
    Calculate the work done in the following reaction NH4NO3(s)→N2O(g)+2H2O(g)\mathrm{NH_4NO_{3(s)} \rightarrow N_2O_{(g)} + 2H_2O_{(g)}} at 300300 K. [R=8.314 J K−1 mol−1R = 8.314\ \mathrm{J\ K^{-1}\ mol^{-1}}]

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