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Change in internal energy when 4 kJ of w...

Change in internal energy when `4 kJ` of work is done on the system and `1 kJ` of heat is given out of the system is

A

`+1 kJ`

B

`-5 kJ`

C

`+5k J`

D

`+3 kJ`

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaU=q+w=(-1 kJ)+4kJ=+3kJ`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  7. Calculate the work invoved when 1 mol of an ideal gas is compressed r...

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  8. The enthalpy of neutralization of oxitic acid by strong acid is 25.4 k...

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  9. An endothermic reaction has a positive internal energy change DeltaU. ...

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  10. The reaction A to B , DeltaH=+24 kJ//"mole". For the reaction B to C, ...

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  11. For a chemical reaction, DeltaG will always be negative if,

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  12. In which reaction there will be increase in entropy ?

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  13. A chemical reaction cannot occur at all if its

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  14. Rate of a reaction can be expressed by Arrhenius equation as: k = Ae...

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  15. BaSO(4) is insoluble in water due to its

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  16. Given that Deltah(f)(H)=218 kJ//mol. Express the H-H bond energy in K ...

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  17. Calculate DeltaH^(@) for the reaction Na(2)O(g)+SO(3)(g)toNa(2)SO(4)...

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  18. For the reaction N(2)(g)+3H(2)(g)to2NH(3)(g), which of the following...

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  19. Given that dE=TdS-PdV and H=E+PV, which one of the following relations...

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  20. The activation energies of two reactions are E(1) & E(2) with E(1)gtE(...

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