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State the first law of thermodynamics....

State the first law of thermodynamics.

A

`DeltaU = Deltaq - W`

B

`q = DeltaU - W`

C

`qd +dW = 0`

D

`DeltaU q +W`

Text Solution

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The first law of thermodynamics states that `DeltaU = q +w`, i.e. the internal enegry of system is equal to the sum of heat and work.
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CENGAGE CHEMISTRY-THERMODYNAMICS-Exercises (Multiple Correct)
  1. For the adiabatic expansion of an ideal as

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  2. In which of the following entropy increases?

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  3. Which of the following are irreversible processes

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  4. Which of the options give below are correct?

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  5. Which of the following are thermodynamically stable?

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  6. Which of the following affect the heat of reaction?

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  7. Which of the following type of energies are involved in Born Haber's c...

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  8. Which of the following are true about resonance enegry?

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  9. Hess' law is applicable for determination of enthalpy of

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  10. Indicate in which case/cases the spontaneity of a change is favoured w...

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  11. Endothermic reactions, having DeltaS = +ve masy be spontaneous if

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  12. If DeltaH is the enthalpy change and DeltaU the change in internal ene...

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  13. An isolated system is that system in which

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  14. In a reaction, DeltaH and DeltaS both are more than zero. In which of ...

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  15. State the first law of thermodynamics.

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  16. In which reaction(s), DeltaS in negative?

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  17. The heat evolved in the combustion of benzene is given by C(6)H(6) (...

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  18. The heat of neutralization fo a stron acid by a strong base is a const...

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  19. The enthalpy change for the process C("graphite") rarr C(g)is called

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  20. Enthalpy change equal internal energy change when

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