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In a process, a system absorbs 500J of h...

In a process, a system absorbs 500J of heat performs 800J of work. In the process, q=______ and w=______.

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As the system absorbs heat and performs work, q is +ve and w is -ve. Hence, q=+500 J and w=-800J.
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CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-WARM UP EXERCISE
  1. When work (w) is done by the system, the sign of w is negative. But wh...

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  2. Which is not a state function: (q+w),w,H,G ?

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  3. In a process, a system absorbs 500J of heat performs 800J of work. In ...

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  4. In a process, a system releases 500J of heat and work done on the syst...

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  5. A certain amount of a gas participates in the cyclic process ABCD (fol...

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  6. Under which condition will the pressure-volume work be, w=- underset(V...

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  9. In which of the following reactions is the work done zero? Assign the ...

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  10. Why does the total energy of an isolated system remains constant?

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  11. Write down the mathematical form of the first law of thermodynamics fo...

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  12. According to the first law of thermodynamics, DeltaU=q+w. Write down t...

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  13. Among the following processes identify those in which the change in in...

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  14. A closed system undergoes a process AtoB. If it occurs reversible, the...

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  15. For an ideal gas, the isothermal free expansion and adiabatic free exp...

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  16. For chemical changes, why is the change in enthalpy more useful than t...

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  17. From the equation H=W+PV, explain what H is a state function.

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  18. From the definition of enthalpy show that for n mol of an ideal gas H=...

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  19. Prove that for an ideal gas undergoing an isothermal change, DeltaH=0.

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  20. Under what conditions are (i) DeltaU=q(V)& (ii) DeltaH=q(P) ?

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