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The enthalpies of elements in their stan...

The enthalpies of elements in their standard states are taken as

A

zero at 298 K

B

unity at 298 K

C

zero at 273 K

D

zero at 25 K

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CHETANA PUBLICATION-Chemical Thermodynamics-EXERCISE
  1. The molar heat capacity of water is if its specific heat capacity is 4...

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  2. Calculate the heat of reaction at 298 K for the reactionC2H(4(g)) + H2...

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  3. The enthalpies of elements in their standard states are taken as

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  4. The standard heat of formation of diamond is

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  5. Which of the following values of DeltafH represents the least stable p...

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  6. The enthalpies of formation of N2O and NO at 298 K are 82 and 90 kJ mo...

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  7. The latent heat of vaporization of a liquid at 500 K at1atm pressure i...

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  8. For a gaseous reaction involving complete combustion of isobutane,

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  9. The difference between DeltaH and DeltaU for the combustion of methane...

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  10. Enthalpy of combustion of carbon is -395 kj.The amount of carbon neede...

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  11. The heats of combustion of hydrogen, carbon monoxide and methane are -...

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  12. The decreasing order of calorific values is

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  13. The heat evolved in the combustion of glucose (C6H(12)O6) is given by ...

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  14. A person requires A kJ of energy daily. If the heat of combustion of c...

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  15. A person submits to a diet of 9,500 kj per day and expends energy in a...

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  16. The bond dissodation energies of gaseous H2, Cl2 and HCl are 104, 58 a...

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  17. Given thebond energiesof N=N, H-H,and N-H bonds are 945, 436 and 391 k...

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  18. The bond energy of an O-H bond is109 kcal mol^(-1). When a mole of wat...

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  19. The mutual heat of neutralisation of 40g NaOH and 60g CH3COOH will be

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  20. When 10 ml NaOH is added to 10 ml HCl,the temperature rises by 3^@C. I...

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