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The enthalpy of formation for all elemen...

The enthalpy of formation for all elements in their standard state is

A

unity

B

zero

C

Less than zero

D

different elements

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CHETANA PUBLICATION-Chemical Thermodynamics-EXERCISE
  1. The bond energy of an O-H bond is109 kcal mol^(-1). When a mole of wat...

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

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

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  4. The heat of neutralization of a strong acid and a strong base is-60 kj...

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  5. The enthalpy of neutralization of NaOH with HCl is-57.32 kJ while with...

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  6. The work done during the process when 1 mol of gas is allowed to expan...

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  7. Which of the following is an extensive property?

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  8. The enthalpy of formation for all elements in their standard state is

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  9. In which of the following entropy of the system decreases?

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  10. Give the mathematical expression of first low of thermodynamics:

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  11. What is the second law of thermodynamics ?

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  12. What is enthalpy of the fusion?

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  13. In the reaction, H2 + Cl2 rarr 2HCl DeltaH =-184 kJ, if 2 moles of H2 ...

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  14. 22 g of CO2 are compressed isothermally and reversibly at 298 K fromin...

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  15. A System absorbs 520J of heat and perform work of 210J calculate the c...

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  16. 38.55kjof heat is absorbed when 6.0 g of 02 react with C1F according t...

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  17. Calculate the total heat required (a) to melt 180 g to ice at O^@C (b)...

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  18. 300 m mol of an ideal gas occupies 13.7 dm^3 at 300 K. Calculate the w...

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  19. State Hess's law of constant heat summation Illustrate with an example...

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  20. 0btain the relation between DeltaG and DeltaS(to tal) Comment on Spont...

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