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For which of the following substances De...

For which of the following substances `Delta_fH^@` is not zero.

A

Ca(s)

B

He(g)

C

P(red)

D

`CH_3OH_((i))`

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CHETANA PUBLICATION-Chemical Thermodynamics-EXERCISE
  1. In the reaction, H2 + Cl2 rarr 2HCl DeltaH =-184 kJ, if 2 moles of H2 ...

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

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  3. For which of the following substances DeltafH^@ is not zero.

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  4. If for a reaction, DeltaH is negative and DeltaS is positive then the ...

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  5. Properties of a system which are proportional to the quantity of matte...

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  6. Obtain the relationship between DelatG^@ of a reaction and equilibrium...

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  7. DeltaH for the reaction 2H(g) rarr H2(g) will be

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  8. For the process, H2O(l) rarr H2O((g)) at 100^@C, DeltaS is

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  9. Which represents largest amount of energy?

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  10. Which of the following process is non-spontaneous?

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  11. For which of the following reaction DeltaS is negative?

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  12. A gas expands in volume from 2 L to 5 L against a pressure of1atm at c...

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  13. A thermally isolated gaseous system can exchange energy with the surro...

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  14. Which of the following groups includes two intensive properties and on...

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  15. Identify the state function among the following.

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  16. Energy equivalent to one erg, one joule, and one calorie in the increa...

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  17. During an isothermal expansion of an ideal gas,

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  18. Which one of the following statements is incorrect?

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  19. The temperature of the system decreases in an

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  20. For a cyclic process, which of the following is correct ?

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