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Explain : Heat of formation of acetylene...

Explain : Heat of formation of acetylene is +54 kcal.

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When 1 mole of gaseous acetylene is formed its elements, carbon (s) and hydrogen (g) 54 kcal f heat is absorbed.
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SUBHASH PUBLICATION-CHEMICAL THERMODYNAMICS-Numerical problems :
  1. Explain : Heat of formation of acetylene is +54 kcal.

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  2. Calculate the hest of reaction of the following reaction : C(6)H(12)...

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  4. 1m^(3) of C(2) H(4) at STP is burnt in oxygen, according to the thermo...

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  5. With the help of a thermochemical equation, calculate Delta(f)H^(@) at...

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  6. The heat of combustion of C(2)H(6) is -368.4 kcal. Calculate the heat ...

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  7. The following thermochemical equations represent combustion of ammonia...

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  8. The equilibrium constant at 25^(@)C for the process CO^(3+)(aq) + 6N...

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  9. What is the value of the equilibrium constant for the following reacti...

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  10. 1.250 g of a sample of octane (C(8)H(18)) is burnt in excess of oxygen...

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  11. Calculate the standard free energy change Delta G^(@) for the reaction...

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  12. From the data given below at 298 K for the reaction : CH(4)(g) + 2O(...

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  13. Calculate the free energy change when 1 mole of NaCl is dissolved in w...

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  14. For the equilibirum, PCl(5)(g) hArr PCl(3)(g) + Cl(2)(g) at 298 K, K =...

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  15. Calculate the entropy change involved in convertion of 1 mole of water...

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  16. Calculate Delta H(f) of HCl if bond energy of H-H bond is 437 kJ Cl-CL...

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  17. Calculate the Gibb's energy change for the formation of propane, C(3)H...

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  18. For the reaction, N(2)(g) + 3H(2)(g) rarr 2NH(3)(g), Delta H = -95.2 k...

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  19. For a water gas reaction, C((s)) + H(2)O((g)) hArr CO((g)) + H(2(g)) a...

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  20. Calculate the standard free energy for a reaction X hArr Y, if the val...

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  21. Calculate the standard Gibb's energy change for a reaction at 298 K, i...

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