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For gaseous reaction, if Delta H is the ...

For gaseous reaction, if `Delta H` is the change in enthalpy and `Delta U` that in internal energy then :

A

`Delta H` is always greater than `Delta U`

B

`Delta H` is always less than `Delta U`

C

`Delta H lt Delta U` only if the number of mole of the products is less than that of the reactants

D

`Delta U lt Delta H` only if the number of mole of the reactants is less than that of the products

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The correct Answer is:
C, D
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-Additional Practice Exercise
  1. For gaseous reaction, if Delta H is the change in enthalpy and Delta U...

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  2. Which among the following is not an exact differential?

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  3. A system consisting of one mole of an ideal diatomic gas absorbs 200J ...

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  4. A mono atomic ideal gas undergoes a process in which the ratio of P to...

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  5. 1 mole each of CaC(2), Mg(2)C(3) reacts with excess water in separate ...

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  6. The temperature of 5 moles of a gas is decreased by 2K at constant pre...

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  7. When an ideal gas at a pressure P, temperature T and volume V is isoth...

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  8. Which of the following statement is incorrect?

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  9. A gas absorbs 100 calories of heat energy and is compressed from 10L t...

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  10. The enthalpy of neutralization of weak monoprotic acid, HA in 1M solut...

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  11. The heat of combustion of hydrocarbon C(x)H(y) is ''a'' calories and h...

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  12. The standard enthalpy of formation of hypothetical MgCl is -125kJ mol^...

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  13. Calculate the resonance energy of N(2)O from the following data Delta ...

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  14. The maximum entropy of mixing ocuurs when hexane and heptane are mixed...

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  15. When 3.0 mole of an ideal diatomic gas is heated and compressed simult...

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  16. underset(P(1), V(1), T(1))("State") A overset("Rev")rarr underset(P(2)...

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  17. During winters, moisture condenses in the form of dew and can be seen ...

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  18. Assuming Delta H^(0) and Delta S^(0) do not change with temperature th...

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  19. For the reaction X(2)O(4(l)) rarr 2XO(2(g)), Delta U= 2.1 "kcal", Delt...

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  20. The correct signs of Delta S for the following four processes respecti...

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  21. Assume that C(6)H(6) and C(6)H(5)CH(3) form an ideal solution then Del...

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