A gas is suddenly expanded such that its final volume becomes 3 times its intial volume. If the specific heat at constant volume of the gas (Cv)=2R. Then the ratio of initial to final pressure […]
One mole of an ideal gas at an initial temperature of T K, does 6R joule of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume […]
When 4g of iron is burnt to ferric oxide at constant pressure, 29.28 kJ of heat is evolved. What is the enthalphy of formation of ferric oxide? (At. Wt of Fe=56)
Options
(a) […]
What will be the correct relationship between free energy and equilibrium constant K of a reaction?
Options
(a) ∆G = -RT ln K (b) -∆G = 0 (c) ∆G = -RT⁻¹ ln K […]
During the crystallization of a solid from the aqueous solution, the following statement is correct (∆H is -ve)
Options
(a) ∆H = T∆S (b) ∆H > T∆S (c) ∆H < T∆S (d) None […]
The enthalphy change for the reaction N₂ + 3H₂ → 2NH₃ is -92.38 kJ at 298K. The internal energy change at 298K is
Options
(a) -92.38 kJ (b) -87.42 kJ (c) -97.34 kJ […]
In an exothermic reaction(reversible) which of the following has positive value
Options
(a) Enthalphy (b) Entrophy (c) Gibb’s Free Energy (d) None of these
Correct Answer:
Gibb’s Free Energy
Explanation:
No explanation available. […]
The bond dissociation energies of H₂, Cl₂ and HCl are 104, 58, and 103 kcal mol⁻¹ respectively. The enthalphy of formation of HCl would be
Options
(a) -22 Kcal mol⁻¹ (b) -44 Kcal […]
540 g of ice at 0° C is mixed with 540 g of water at 80° C. The final temperature of the mixture in °C will be
Options
(a) 40° C (b) 79.9° […]
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