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If a gas, at constant temperature and pr...

If a gas, at constant temperature and pressure expands, then its

A

internal energy increases and then decreases

B

internal energy increases

C

internal energy remains the same

D

internal energy decreases

Text Solution

Verified by Experts

The correct Answer is:
C
We know that internal energy of a gas depends upon its pressure and temperature. Thus, if a gas exapnd at constant temperature and pressure then its internal energy remains same.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-CHEMICAL THERMODYNAMICS AND ENERGETIC-Exercise 1
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  2. The change in the internal energy for an isolated system at constant v...

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  3. If a gas, at constant temperature and pressure expands, then its

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  4. Select the correct statement(s).

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  5. Which of the following statement/expression is/are correct?

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  6. In a process, 701 J of heat is absorbed by a system and 394 J of work ...

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  7. Which of the following is the correct expression for the change in int...

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  8. The change in internal energy for an isolated system at constannt volu...

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  9. For the equilibrium, A(g)hArrB(g),DeltaH is -40kJ//mol, if the ratio o...

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  10. Based on the first law of thermodynamics, which one of the following s...

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  11. Select the correct statement/expression about the graph.

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  12. If 1 mole of an ideal gas exapands isothermally at 37^(@)C from 15 L t...

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  13. An ideal gas expands from 10^(-3) m^(3) to 10^(-2) m^(3) at 300 K agai...

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  14. For an ideal gas, pressure (p) and interal energy (E ) per unit volume...

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  15. How many joules of heat are absorbed when 70.0 g of water is completel...

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  16. Change in internal energy when 4 kJ of work is done on the system and ...

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  17. A system absorb 600 J of heat and work equivalent to 300 J on its surr...

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  18. Select the correct formula about the change in enthalpy.

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  19. Select the correct formula for Delta(sol)H^(-).

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  20. Which of the following statement is correct regarding melting of ice?

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