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The heat of formation (DeltaH(f)^(@)) of...

The heat of formation `(DeltaH_(f)^(@))` of `H_(2)O(l)` is equal to :

A

zero

B

molar heat of combustion of `H_(2)(l)`

C

Molar heat of combustion of `H_(2)(g)`

D

sum of heat of formation of `H_(2)O(g) and O_(2)(g)`

Text Solution

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The correct Answer is:
C
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OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level-A
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  2. The word 'standard' in standard molar enthalpy change implies

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  3. The heat of formation (DeltaH(f)^(@)) of H(2)O(l) is equal to :

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  4. The value of DeltaH and DeltaS for a reaction are respectively 30 kJ m...

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  5. The value of DeltaH^(@) for the reaction Cu^(+)(g)+I^(-)(g)toCuI(g) is...

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  6. If the enthalpy change for the reaction, CH(4)(g)+Cl(2)(g)toCH(3)Cl(...

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  7. The standard heat of formation of sodium ions in aqueous solution from...

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  8. AB,A(2) and B(2) are diatomic molecules. If the bond enthalpies of A(2...

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  9. The lattice energy of solid NaCI is 180 kcal mol^(-1). The dissolution...

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  10. Which one of the following statement is false?

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  11. DeltaG^(ɵ) for the reaction X+YhArrC is -4.606 kcal at 1000 K. The equ...

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  12. The enthalpy of dissolution of BaCl(2)(s) and BaCl(2).2H(2)O are -20.6...

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  13. For the reaction A(g)+2B(g)rarr2C(g)+3D(g), the value of DeltaH at...

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  14. In thermodynamics, a process is called reversible when

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  15. The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calo...

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  16. One mole of a non-ideal gas undergoes a change of state (2.0atm,3.0L,9...

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  17. Which of the reaction defines molar DeltaH(f)^(@) ?

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  18. The enthalpies of formation of Al(2)O(3) and Cr(2)O(3) are -1596KJ and...

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  19. Which of the following is true for spontaneous process?

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  20. Considering entropy (S) as a thermodynamics parameter, the criterion f...

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