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Sign of DeltaU in adiabatic expansion of...

Sign of `DeltaU` in adiabatic expansion of a gas is _____.

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`-ve`.
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Knowledge Check

  • During adiabatic expansion of 2 mol of a gas, the internal energy of the gas is found to decrease by 2J. The work done by the gas during the process is

    A
    1J
    B
    `-1 J`
    C
    `2 J`
    D
    `-2 J`
    • CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-FILL IN THE BLANKS
    1. Sign of DeltaU in adiabatic expansion of a gas is .

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    2. In a process q>0, but w=0. so, the internal energy of the system will ...

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    3. According to first law, for a cyclic process q+w=.

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    4. Volume of a substance is an property while molar volume of a substance...

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    5. Specific heat capacity of a substance is x cal*g^(-1)*""^(@)C^(-1). Sp...

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    6. Molar heat capacity of a substance at constant pressure is than that a...

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    7. In Vaporisation of water, the signs of q and w are and respectively.

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    8. For a process occurring at constant volume, DeltaU=+10kJ. In this proc...

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    9. In isothermal expansion of 1 mol of an ideal gas, q=+12kJ. The value o...

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    10. In a chemical reaction, if the total enthalpies of reactants and produ...

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    11. At 25^(@)C, the standard state of liquid ethanol means ethanol at 25^(...

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    12. Given: C(3)H(8)(g)+5O(2)(g)to3CO(2)(g)+4H(2)O(l) and C(3)H(8)(g)+5O(2)...

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    13. At 25^(@)C and 1 atm, the standard reaction enthalpy for the reaction ...

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    14. At 25^(@)C and 1 atm, standard reaction enthalpy for the reaction, CH(...

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    15. At 25^(@)C, for the reaction, H^(+)(aq)+OH^(-)(aq)toH(2)O(l),DeltaH^(0...

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    16. The change in entropy for the process KCl(s)+100H(2)O(l)toKC l (100H(2...

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    17. At 25^(@)C and 1 atm if the bond energy of Cl(2)(g) is 242kJ*mol^(-1),...

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    18. In the reaction DeltaS(sys)=xJ*K^(-1) and DeltaS("surr")=-yJ*K^(-1). T...

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    19. In the cyclic process A overset(I)toBoverset(II)Coverset(III)toA the c...

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    20. NH(4)Cl(s)+H(2)O(l)toNH(4)^(+)(aq)+Cl^(-)(aq). it is an endothermic pr...

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