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Which of the following is nor correct ?...

Which of the following is nor correct ?

A

Dissolution of `NH_(4)Cl` in excess of water is an endothermic process

B

Neutralisation is always exothermic

C

The absolute value of enthalpy `(H)` can be determined experimentally

D

The heat of reaction ar constant volume is denoted by `DeltaE`

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The correct Answer is:
C
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. If the bond dissociation energies of XY,X(2) and Y(2)( all diatomic mo...

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  2. Which of the following pairs of a chemical reaction is certaion to res...

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  3. Which of the following is nor correct ?

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  4. If the heat of neutralization for a strong acid - base reaction is -5...

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  5. The heats fo neutralization of HCl with NH(4) OH and NaOH with CH(3) C...

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  6. Five mole of a gas put through a series of change as shown below graph...

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  7. A process is taking place at constant temperature and pressure. Then

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  8. One mole of a perfect gas expands isothermally to ten times its origin...

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  9. AtoB , DeltaH=4 kcal mol^(-1), DeltaS=10 cal mol^(-1)K^(-1). Reaction ...

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  10. The sublimation energy of I(2) (solid) is 57.3 KJ/mole and enthalpy o...

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  11. For the reaction: 2H(2)(g) +O(2)(g) rarr 2H(2)O(g), DeltaH =- 571 kJ...

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  12. The standard molar heats of formation of ethane, carbon dioxide, and l...

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  13. 0.06 mole of KNO(3) is added to 100cm^(3) of water at 298 K. The entha...

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  14. Which of the following equations does not correctly represent the firs...

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  15. For the reaction CO (g) + (1)/(2) O(2) (g) rarr CO(2) (g) Delta H ...

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  16. The enthalpy of vaporisation of liquid water using the data H(2)(g)+...

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  17. The enthalpy of certain reaction at 273 K is -20.75 kJ. The enthalpy o...

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  18. The bond energies of C=C and C-C at 298 K are 590 and 331 kJ mol^(-1),...

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  19. Water is supercooled to - 4^(@)C. The enthalpy (H) is

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  20. When 0.1 mol of a gas absorbs 41.75 J of heat at constant volume, the ...

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