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Hess's law states that...

Hess's law states that

A

The standard enthalpy of an overall reaction is the sum of the enthalpy chages in individual reactions

B

enthalpy of formation of a compound is same as the enthalpy of decomposition of the compound into constituent elements, but with opposite sign

C

at constant temperature the pressure of gas is inversely propoortional to its volume

D

the mass of a gas dissolved per lit of a solvent is proportional to the pressure of the gas in equilibrium with the solution.

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AAKASH SERIES-CHEMICAL THERMODYNAMICS-Practice Sheet- Exercise-II
  1. The heats of combustion of carbon,hydrogen and acetylene are -394kJ, -...

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  2. The standard enthalpies of formation of H(2)O(2(l)) and H(2)O((l)) are...

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  3. Given C+ 2S rarr CS(2), DeltaHf^(0) = +117.0 KJ mol^(-1), C + O(2) rar...

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  4. The lattice energy of solid NaCl is 180K. Call per mol. The dissolutio...

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  5. The enthalpy of solution of BaCl(2)(s) and BaCl(2).2H(2)O(s) " are " -...

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  6. Hess's law states that

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  7. Equal volumes of equi molar HCl and H(2)SO(4) are separately neutralis...

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  8. The bond dissociation energies for Cl(2),I(2) and Icl are 242.3, 151 a...

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  9. Enthalpy of neutralisation of H(3)PO(3) acid is -106.68kJ//mol using N...

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  10. If DeltaH(f)^(0) " for" H(2)O(2(l)) and H(2)O((l)) " are " -188 kJ mol...

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  11. Chemical reactions are invariably associated with the transfer of ener...

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  12. Chemical reactions are invariably associated with the transfer of ener...

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  13. Chemical reactions are invariably assocated with the transfer of energ...

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  14. Chemical reactions are invariably assocated with the transfer of energ...

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  15. Match the following columns

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  16. Heats of atmoisation of ozone and oxygen are 25 units and 30 units res...

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  17. Compute the heat of formation of liquid methyl alcohol in kilojoules p...

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  18. The bond dissociation energies of gaseous H(2), Cl(2) and HCl are 104,...

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  19. Heat of formation of 2 moles of NH(3)(g) " is" -90 kJl bond energies o...

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  20. If S + O(2) rarr SO(2), DeltaH= -398.2kJ SO(2) + (1)/(2) O(2) rarr S...

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