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A gas can expand from 100 mL to 250 mL u...

A gas can expand from `100 mL` to `250 mL` under a constant pressure of `2` atm. The work done by the gas is

A

`30.38` joule

B

`25` joule

C

`5 k` joule

D

`16` joule

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaV=250mL-100mL=150mL`
`=0.15 L`
`P_("ext")=2"atm"`
`W=-P_("ext")xxDeltaV=-(0.15 L)xx(2 "atm")`
`=-0.3 L "atm"=-0.3xx1.01325xx10^(2)J`
`=30.3975 J`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  7. The value of DeltaH-DeltaE for the following reaction at 27^(@)C will ...

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  11. Standard enthalpy and standard entropy changes for the oxidation of am...

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  12. The enthalpy of the reaction H(2)(g)+(1)/(2)O(2)(g)toH(2)O(g) is Del...

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  13. When 50 cm^(3) of 0.2 N H(2)SO(4) is mixed with 50 cm^(3) of 1 N KOH, ...

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  14. How much energy is released when 6 mole of octane is burnt in air ? Gi...

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  15. For the equilibrium H(2) O (1) hArr H(2) O (g) at 1 atm 298 K

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  16. 1 mol of H(2) SO(4) in mixed with 2 mol of NaOH. The heat evolved will...

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  17. In a reversible process, Delta S(sys) + Delta S(surr) is

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  18. For the reaction N(2)+3H(2)hArr2NH(3), DeltaH=?

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  19. One mole of a perfect gas expands isothermally to ten times its origin...

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  20. An ideal gas expands from 1xx10^(-3)m^(3) to 1xx10^(-2)m^(3) at 300K a...

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