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Thermodynamics

Short Answer Type

11.

What is a state function?

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Multiple Choice Questions

12. A thermodynamic state function is a quantity

used to determine heat changes
whose value is independent of path
used to determine pressure volume work
whose value depends on temperature only

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Short Answer Type

13.

What is reversible process in thermodynamics?

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14.

Define irreversible change.

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15. Name the variable that is kept constant in isochoric process and isobaric process.

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16.

Give one difference between an isothermal and an adiabatic process.

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Multiple Choice Questions

17. For the process to occur under adiabatic conditions, the correct condition is

∆T = 0
∆p = 0
q = 0
w = 0

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Short Answer Type

18.

Define internal energy of a system

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19.

Define enthalpy.

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20.
Why is enthalpy considered more useful than internal energy in chemical reactions?

Internal energy (U) and enthalpy (H) are measured by keeping constant volume and pressure respectively. Since most of the reactions occur under atmospheric pressure, so enthalpy is more useful than internal energy in chemical reactions.

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Short Answer Type

Multiple Choice Questions

Short Answer Type

Multiple Choice Questions

Short Answer Type

20. Why is enthalpy considered more useful than internal energy in chemical reactions?

20.
Why is enthalpy considered more useful than internal energy in chemical reactions?