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The enthalpies of all elements in their ...

The enthalpies of all elements in their standard states are,
i) unity
ii) zero .
iii) 'lt0'
iv) different for each element

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ii) The enthalpies of all elements in their standard states are zero.
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V PUBLICATION-THERMODYNAMICS-QUESTION BANK
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  3. The enthalpies of all elements in their standard states are, i) unity...

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  4. Delta U^theta of combustion of methane is -X kJ mol^(-1) . The value o...

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  5. a) The enthalpy of combustion of CH(4(g)), C(graphite) and H(2(g)) at ...

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  6. A reaction, 'A+B rarr C+D+q' is found to have a positive entropy chang...

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  7. In a process, 701 J of heat is absorbed by a system and 394 J of work ...

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  8. The reaction of cyanamide, NH2CN(s) with oxygen was carried out in a b...

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  9. Calculate the number of kJ of heat necessary to raise the temperature ...

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  10. Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0^...

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  11. Enthalpy of combustion of C to CO2 is -393.5 KJ mol^-1. Calcualte the ...

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  12. Ethalpies of formation of CO(g), CO2(g) ,N2O(g) and N2O4(g) are -110,-...

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  13. Given that N2(g)+3H2(g)rarr2NH3 DeltarHtheta=-92.4 What is the sand...

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  14. Calculate the standard enthalpy of formation of CH3OH(l) from the foll...

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  15. Calculate the enthalpy change for the process 'CCl4(g) rarr C(g)+4 Cl(...

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  16. For an isolated system, Delta U=0. What will be DeltaS?

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  17. For the reaction 2A+BrarrC at 298 K, DeltaH=400kJ mol^-1 and DeltaS=0....

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  18. For the reaction, 2Cl(g)rarr Cl2(g) what are the signs of DeltaH and D...

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  19. For the reaction 2A(g)+B(g)rarr2D(g), DeltaU^theta=-10.5 kJ and DeltaS...

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  20. The equilibrium constant for a reaction is 10. What will be the value ...

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